Mentors at Your Benchside: Recent Episodes

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Bioscience Research Tips and Advice Webinars from Bitesize Bio

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76 — Do you know how the first cells were identified? Or who discovered them? What about why they are called cells? Discover the fascinating history in this enlightening Mentors At Your Benchside episode.

Visit the original article for a timeline of cell biology, [1] discover the most commonly used cell lines, [2] and find out why HeLa cells are surrounded by controversy. [3]

Resources:
1. History of Cell Biology. Available at: https://bitesizebio.com/166/history-of-cell-biology/
2. Top 5 of the Most Commonly Used Cell Lines. Available at: https://bitesizebio.com/33473/top-5-of-the-most-commonly-used-cell-lines/
3. The Story Behind Your Cell Culture. Available at: https://bitesizebio.com/7647/the-story-behind-your-cell-culture/

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74 — Understanding how a technique works make it simpler to troubleshoot when things go wrong in your experiments. Learn how alkaline lysis works in this short and simple step-by-step run-through of the process.

Check out the original article for links to helpful resources, [1] discover five ways to clean up a DNA sample, [2] and get tips on preparing your vectors for gene cloning. [3]

Resources:
1. Lab Basics: How The Alkaline Lysis Method Works. Available at: https://bitesizebio.com/180/the-basics-how-alkaline-lysis-works/
2. 5 Ways to Clean Up A DNA Sample. Available at: https://bitesizebio.com/142/5-ways-to-clean-up-a-dna-sample/
3. 5 Tips on Vector Preparation for Gene Cloning. Available at: https://bitesizebio.com/13500/cloning-tips-vector-prep/

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73 — PCR is a fundamental technique all biologists rely on, and, for qPCR, we can construct a standard curve that tells us how good or bad our primers are.

In this episode, learn all about qPCR standard curves, what they tell you about your primers, and what to try if something doesn't look correct on your standard curve.

Check out the corresponding online article for an example qPCR curve. [1] For more PCR essentials, download our free eBook that explains everything you need to know. [2] And to drill specifically into the efficiency of your PCR, read our article on determining qPCR efficiency. [3]

Resources:
1. The qPCR Standard Curve: The Key to Good qPCR Data. Available at: https://bitesizebio.com/31470/obligate-qpcr-standard-curve/
2. The Fundamentals of qPCR and RT-qPCR. Available at: https://bitesizebio.com/the-fundamentals-of-qpcr-and-rt-qpcr/
3. Important Considerations for Determining qPCR Efficiency. Available at: https://bitesizebio.com/3177/determining-qpcr-efficiency/

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72 — Research requires imagination and strategy, and helpful distractions can give us the mental rest we need to recharge. Fun hobbies for scientists can provide inspiration, creativity, fitness, articulacy, and a much-needed break. Discover our top 10 hobbies for scientists, and find a new hobby that could also benefit your research.

Visit the original article for links to related resources [1] and discover why creativity is so important in science. [2] For more helpful tips to boost your research, read our article on how to give an engaging talk [3] or take our course on critical thinking. [4]

Resources:
1. 10 Fun Hobbies for Scientists. Available at: https://bitesizebio.com/74251/hobbies-for-scientists/
2. Creativity in Science: How a Good Imagination Can Help Your Research. Available at: https://bitesizebio.com/63742/creativity-in-science/
3. How to Give a Great Scientific Talk and Engage Your Audience. Available at: https://bitesizebio.com/29880/great-scientific-talk/
4. How to Critically Review a Scientific Manuscript. Available at: https://bitesizebio.com/courses/critical-review/

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71 — A good histology slide can give you beautiful, revealing microscope images of your precious tissue samples. But what goes into preparing slides for histology?

Whether you're new to the game, have only ever sent your samples off for slide preparation, or need a refresher, this episode explains how histology slides are prepared.

Check out the corresponding article for links to related histology resources. [1] Plus, learn about the different fixes for histology [2] and the various ways you can section tissues. [3]

Plus, check out our histology hub for more histology content, from free posters and guides to articles and a jargon-busting glossary of the common terms. [4]

Resources:
1. How Histology Slides Are Prepared. Available at: https://bitesizebio.com/13398/how-histology-slides-are-prepared/
2. 4 Fixatives for Histology and Cytometry. Perfect Your Preservation. Available at: https://bitesizebio.com/22141/fixation-and-flow-cytometry/
3. The Perfect Slice: Preparing Tissue Samples For IHC. Available at: https://bitesizebio.com/13396/the-perfect-slice-preparing-tissue-samples-for-ihc-2/
4. Histology Made Simple: An Easy Guide for Bioscientists. Available at: https://bitesizebio.com/histology/

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70 — Sterilization is a critical technique in the biology lab. It keeps your cell lines free from contamination, allows safe disposal of used items, and prevents breakouts of phage!

In this episode, we discuss six sterilization techniques and explain how they work.

Read the original article for additional resources on basic lab techniques. [1] If you're curious about how UV light damages DNA, read this article. [2] And check this article out for the lowdown on filtration. [3]

Resources:
1. 6 Laboratory Sterilization Methods. Available at: https://bitesizebio.com/853/5-laboratory-sterilisation-methods/
2. How UV Light Damages DNA and the Havoc it Can Cause to Your Experiments. Available at: https://bitesizebio.com/36762/how-uv-light-damages-dna/
3. How Filtration Works: A Short Guide for Biologists. Available at: https://bitesizebio.com/59280/how-filtration-works/

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69 — Figures are a fundamental way to communicate science and are essential components of journal articles.

In this episode, learn the differences between vector and raster image types, hear the pros and cons of various common file types, and get the lowdown on common parameters such as color models and DPI.

Check out the original article for an easy table that summarizes the key differences between image types. [1] Plus, if you want to make beautiful images of proteins and DNA, read our step-by-step tutorial, [2] and if you need some inspiration, check out our article on the science of figure creation for ideas to make your figures stand out. [3]

Resources:
1. The 2 Types of Digital Images: Tools to Prepare Stunning Images for Publication. https://bitesizebio.com/43785/an-introduction-to-digital-images-in-publications/
2. Learn to Draw a Molecule in PyMOL™ in 8 Easy Steps. Available at: https://bitesizebio.com/54445/molecular-visualization-tool/
3. The Art and Science of Figure Creation: Think BIG to see Small. Available at: https://bitesizebio.com/30920/art-science-figure-creation/

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68 — Controls are fundamental to getting meaningful data. Especially in long, drawn-out experiments like immunofluorescence imaging. In this episode, we explain 5 types of immunofluorescence control, what they tell you, and why they are critical for your experiments.

Check out the original article for links to loads of related resources [1], and you can access all this information as a beautiful poster for your lab. [2]

Resources:
1. 5 Controls for Immunofluorescence: A Beginner’s Guide. Available at: https://bitesizebio.com/44370/controls-for-immunofluorescence-a-beginners-guide/
2. Bitesize Bio's Ultimate Immunofluorescence Troubleshooting Guide. Available at: https://bitesizebio.com/immunofluorescence-troubleshooting-guide/

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66 — Are your plasmid yields low? Not sure what is considered a good yield? Need help boosting the amount of plasmid you get from your preps?

In this episode, we discuss what is a good and bad yield, why your plasmid preps might be sub-optimal, and how you get better yields.

Read the original article for an easy protocol for growing unsaturated cultures. [1] Discover the differences between DNA precipitation and ethanol vs. isopropanol in our article [2] and watch Eppendorf's webinar on centrifugation basics. [3]

Resources:
1. Better Plasmid Purification: 11 Reasons Your Plasmid Yield is Low. Available at: https://bitesizebio.com/13514/boost-plasmid-yield/
2. DNA Precipitation: Ethanol vs. Isopropanol. Available at: https://bitesizebio.com/2839/dna-precipitation-ethanol-vs-isopropanol/
3. Essentials in Centrifugation - Better Safe than Sorry! Available at: https://events.bitesizebio.com/essentials-in-centrifugation-1/

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64 — Like many experiments, doing a Western blot typically means comparing half a dozen online protocols, failing completely, triple-checking the recipes of your more suspicious buffers, then remaking them and starting again anyway.

To ease the pain, this episode gives you a reliable ECL reagent recipe so you can prepare your own fresh (and private) stash anytime you need. We also explain what all the components do.

Check out the corresponding article to see a mechanism for the oxidation of luminol and links to papers discussing alternative enhancers. [1] If you want better Western blot transfers, read our top three tips. [2] And better yet, we've put this ECL reagent recipe, an adaptable Western blot protocol complete with buffer recipes, and loads of troubleshooting tips together in a cheat sheet to stick in your lab book. Download it for free here. [3]

Resources:
1. How To Make ECL Reagent: 4 Ingredients, Better Blots. Available at: https://bitesizebio.com/8970/how-to-make-your-own-ecl/
2. 3 Hot Tips to Optimize Your Western Blot Transfers. Available at: https://bitesizebio.com/7356/optimize-your-western-blot/
3. Bitesize Bio's Western Blot Protocol Cheat Sheet. Available at: https://bitesizebio.com/western-blot-protocol/

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39 — Oil immersion microscopy can help increase your resolution in light microscopy. Which, in turn, can lead to better images; and who doesn’t want nicer microscopy images? But do you know why we use immersion oil and objectives for high-power magnification? And do you know how to use an immersion objective correctly?

Listen to this episode of Mentors At Your Benchside to understand the theory behind oil immersion microscopy and get six easy tips on perfecting your oil immersion microscopy.

Visit the original article for advice on how to get better microscopy images using oil immersion. [1]

To learn more about microscopy basics that can boost your imaging, check out our articles on numerical aperture and optical resolution. [2,3]

Resources:
1.How Using Oil Immersion Microscopy Can Increase Your Resolution. Available at:
 https://bitesizebio.com/23421/the-why-and-how-of-oil-immersion-microscopy/
2. That Other Number –The Meaning of Numerical Aperture in Microscopy.  Available at:
https://bitesizebio.com/13450/that-other-number-the-meaning-of-numerical-aperture-in-microscopy/
3. Rubbing your Microscope’s Eyes: A Guide to Optical Resolution.  Available at:
https://bitesizebio.com/13415/rubbing-your-microscopes-eyes-a-guide-to-optical-resolution/

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Make sure you visit the original article, which contains lots of helpful links to get started incorporating AI into your research! [1]

We've also included a list of handy AI resources for biologists that can help you get started in AI. These are:
Fast AI: Making neural nets uncool again [2]
Deep Learning: Build deep learning models today [3]
Deep learning specialization: Become a deep learning expert [4]

Resources:
1. Artificial Intelligence in Biology. Available at:
https://bitesizebio.com/64186/artificial-intelligence-in-biology/
2. Fast AI: Making neural nets uncool again. Available at:
https://www.fast.ai
3. Deep Learning: Build deep learning models today. Available at:
https://www.udacity.com/course/deep-learning-nanodegree--nd101
4. Deep learning specialization: Become a deep learning expert. Available at:
https://www.coursera.org/specializations/deep-learning/?siteID=EBOQAYvGY4A-CZk7TATLvBfdZnDu2EmtDg

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37 — How do you measure how good you are as a scientist? How would you compare the impact of two scientists in a field? What if you had to decide which one would get a grant? One method is the h-index.

In this episode, we discuss the metrics involved in measuring scientific performance, focusing on the metric of choice for many funding bodies, the h-index, and some of its limitations.

Visit the original article for more resources to help you understand what the h-index is. [1]

To learn more about the h-index, read the article that first proposed it. [2] Find out more about Publish or Perish, a software program that retrieves and analyzes academic citations, [3] and how the various online resources and h-index calculators compare when it comes to providing an accurate and comprehensive picture of the scholarly impact of authors. [4]

Resources: 1. Does Your h-index Measure Up? Available at: https://bitesizebio.com/13614/does-your-h-index-measure-up/ 2. Publish or Perish: Explains the use of Publish or Perish and its metrics. Available at: https://harzing.com/resources/publish-or-perish 3. Hirsch JE. An index to quantify an individual’s scientific research output. Available at: https://doi.org/10.1073/pnas.0507655102 4. Meho LI, Yang K. Impact of data sources on citation counts and rankings of LIS faculty: Web of Science versus Scopus and Google Scholar. Available at: https://doi.org/10.1002/asi.20677

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36 — Don't let an inaccurate pipette ruin your experiments. In this episode of Mentors At Your Benchside we’re talking about how to check the accuracy of your pipette, so your results are reliable and repeatable.

You can find the full article on our website. [1]

Read more about cleaning [2] or calibrating pipettes [3] or learn how clean and calibrate your lab balance. [4] For more information on accuracy and how it differs from precision, see our article "How to Measure and Improve Lab Accuracy and Precision". [5]

Resources: 1. How to Check the Accuracy of Your Pipette in 7 Easy Steps. Available at: https://bitesizebio.com/21218/how-to-check-the-accuracy-of-your-pipette/ 2. Take Care of Your Tools: Cleaning Pipettes. Available at: https://bitesizebio.com/20270/cleaning-pipettes/ 3. Performing Pipette Calibration Yourself. Available at: https://bitesizebio.com/40766/performing-pipette-calibration-yourself/ 4. How to Clean and Calibrate Your Lab Balance. Available at: https://bitesizebio.com/24193/how-to-clean-and-calibrate-your-lab-balance/ 5. How to Measure and Improve Lab Accuracy and Precision. Available at: https://bitesizebio.com/55470/accuracy-and-precision/

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35 — A smooth, perfect agar plate will make your microbial experiments a lot easier. Whether you're using LB, M9 or blood agar, tune in to this episode to learn how to pour the perfect plates every time.

Visit our website to read the full article. [1]

Explore other practical secrets of the bacterial world [2] on our website or find out how to avoid lab disasters. [3]

Resources: 1. How to Make the Perfect Agar Plate Every Time. Available at: https://bitesizebio.com/6938/how-to-make-the-perfect-agar-plate-every-time/ 2. Practical Secrets of the Bacterial World for the Uninitiated. Available at: https://bitesizebio.com/26345/practical-microbiology-for-the-uninitiated/ 3. Rookie Researcher Disasters. Available at: https://bitesizebio.com/194/rookie-researcher-disasters/

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34 — Whether you like it or not, you need to know the concentration of your protein samples accurately. Binding constants, enzyme kinetics, and activity assays all need accurately-quantified protein to deliver accurate results.

But there's a head-spinning amount of protein quantification assays out there! The BCA assay, Bradford assay, biuret reaction, the Folin–Lowry assay—but hold on.

Which assay is appropriate for your sample and why? In this episode of Mentors At Your Benchside, we break down our top 5 protein quantification assays, go into their advantages and disadvantages, and suggest what types of proteins they are appropriate for.

Be sure to visit the corresponding article for table breakdown of the assays discussed. [1] You can also follow up this podcast by reading our article on how colorimetric assays work. [2]

Resources: 1. Top 5 Protein Quantification Assays. Available at: https://bitesizebio.com/23824/top-5-protein-quantification-assays/ 2. Ask a Chemist: How Colorimetric Assays Work. Available at: https://bitesizebio.com/7214/ask-a-chemist-how-colorimetric-assays-work/

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33 — Your lab. It probably doesn't look very nice, and often enough, it probably doesn't smell very nice either. Lumps of E. coli, fishy amines, eggy reducing agents. All uniquely rotten. What's your candidate for the worst lab smell? In this episode of Mentors At Your Benchside, we go through our top ten picks for the worst lab smell. Do you agree with us?

Be sure to visit the original article, where you can see what others have to say about our top ten picks. [1] You can also contribute your own worst-smelling chemical in the comments! Also check out the top ten stupid safety mistakes we've made. [2]

Resources: 1. The Top 10 Worst Lab Smells. Available at: https://bitesizebio.com/6935/top-10-worst-lab-smells/ 2. 10 Stupid Lab Safety Mistakes. Available at: https://bitesizebio.com/1899/stupid-lab-safety-mistakes/

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32 — How do you know if your bacteria culture is ready for your experiment? In this episode of Mentors At Your Benchside we take a close look at the popular method of OD600 measurements as well as some other techniques you can use to find out if your bacterial culture is still growing.

You can find the full article on our website. [1]

Learn more about different bacterial strains [2] and get to grips with growth curves [3], or find out how to train yourself to measure OD600 by eye [4]. And if you're curious about sporulating bacteria, read this article about endospores [5].

Resources: 1. Is Your Bacterial Culture Still Growing? A Primer on OD­600 Measurements. Available at: https://bitesizebio.com/41100/is-your-bacterial-culture-still-growing/ 2. Choosing the Right Bacterial Strains for Your Lab. Available at: https://bitesizebio.com/55858/bacterial-strains-for-lab/ 3.Why Isn’t My Culture Growing? The S-Curve Explained. Available at: https://bitesizebio.com/37809/culture-growing-s-curve-explained/ 4.How To Train Yourself to Measure OD600 by Eye. Available at: https://bitesizebio.com/7271/how-to-train-yourself-to-measure-od600-by-eye/ 5.Meet Nature’s Oldest Doomsday Preppers: Endospores. Available at: https://bitesizebio.com/38204/meet-natures-oldest-doomsday-preppers-endospores/

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31 — CRISPR can do more than edit DNA. Cas13, a CRISPR-associated protein that can bind and cut RNA, provides the power of CRISPR for studying RNA. Listen to the episode to discover how you can use Cas13 to knock-down, modify or track RNAs in mammalian cells. Plus learn how Cas13 can help you detect specific RNAs in patient samples in a matter of minutes.

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30 — We have all heard about centrifugation, or more specifically, the horror stories associated with centrifugation going wrong.

But don't let centrifugation scare you! In this episode, you'll learn how to properly balance, when to use the brake, what the difference is between RCF and RPM, and more.

Read the full Whats and Whys of Centrifugation article for some of the most common issues that can be easily overlooked during centrifugation and why they are so important for the proper handling of a centrifuge. Discover why RPM Does Not Equal RCF, and get top tips for Proper Use and Handling of Centrifugal Filters.

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29 — Ever wondered why you have to add protease inhibitors to your lysis buffer? In this episode of Mentors At Your Benchside we’ll tell you all about protease inhibitors, why they’re important and how to use and store them.

To learn more about protease inhibitors and to access the table with information about common protease inhibitors, read the full article on our website [1].

Read more about how protease inhibitors work [2], learn about protein expression [3] and find out what you need to consider during cell lysis [4].

Resources: 1. Protease Inhibitors 101: How They Work and How to Use Them. Available at: https://bitesizebio.com/58195/protease-inhibitors-101/ 2. How Proteases and Protease Inhibitors Work. Available at: https://bitesizebio.com/8845/how-proteases-and-protease-inhibitors-work/ 3. The Bitesize Bio Guide to Protein Expression – a Bitesize Bio eBook. Available at: https://bitesizebio.com/webinar/the-bitesize-bio-guide-to-protein-expression-a-bitesize-bio-ebook/ 4. Four Important Considerations for Your Cell Lysis. Available at: https://bitesizebio.com/40942/4-important-considerations-for-your-cell-lysis/

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27 — SDS-PAGE gels can be run at constant current, constant voltage or constant power. But which is best? Listen to this episode of Mentors at Your Benchside to discover the differences between current, voltage and power, and how they affect how your gels run.

Visit the original article to see a summary table of running your SDS-PAGE gels at a constant voltage, current or power. [1] We've also got tips and tricks for casting the perfect SDS-PAGE gel, [2] or read a refresher on how SDS-PAGE works. [3]

Resources: 1. Constant Current or Voltage in SDS-PAGE: The Great Debate. Available at: https://bitesizebio.com/51744/constant-current-or-voltage-in-sds-page/. 2. A Simple SDS-PAGE Gel Recipe and 10-Step Casting Protocol for Perfect Gels. Available at: https://bitesizebio.com/59429/sds-page-gel-recipe/. 3. How SDS-PAGE Works. Available at: https://bitesizebio.com/580/how-sds-page-works/.

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26 — Optimal conditions for DNA ligation reactions are a delicate balance between DNA molecules interacting and the enzymatic ligation reaction.

In this episode, you'll discover our top 6 DNA ligation tips to improve the efficiency of your ligations and increase your cloning success rate!

Read the full article to get more practical advice for optimizing DNA ligation reactions for cloning. [1] Want more cloning advice? Read about Cloning with Compatible Cohesive Ends, [2] and discover how to Remove Unwanted DNA from Vectors. [3] Also, find out why T4 DNA ligase is such a popular ligase and perhaps the only ligation enzyme you’ll ever need. [4]

Resources: 1. DNA Ligation: How it Works & 6 Top Tips. Available at: https://bitesizebio.com/10279/how-dna-ligation-works/ 2. Assembling the Puzzle: Cloning with Compatible Cohesive Ends. Available at: https://bitesizebio.com/21716/assembling-the-puzzle-cloning-with-compatible-cohesive-ends/ 3. Tech Clinic #1: Removing Unwanted DNA from Vectors — beat Murphy’s Law. Available at: https://bitesizebio.com/10228/removing-unwanted-dna-from-vectors-how-to-beat-murphys-law/ 4. T4 DNA Ligase: The Only Ligase You’ll Ever Need? Available at: https://bitesizebio.com/46482/t4-dna-ligase-the-only-ligase-youll-ever-need/

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26 — Cryo-EM is a revolutionary imaging method that lets us see complex biostructures at higher and higher resolutions.

But do you understand the mind-blowing science behind this technique? And what is cryo-electron microscopy, anyway? Why is the cryogenic aspect important, and how did it seemingly go from nothing to the big time? In the latest episode of Mentors At Your Benchside, we answer all of these questions and more!

Check out the corresponding online article to access loads of follow-up resources to deepen your understanding of this topic.[1] Also, check out our related articles covering crucial sample preparation considerations for cryo-EM and its history from obscure to Nobel Prize winner. [2,3]

Resources: 1. What Is Cryo-Electron Microscopy? Available at: https://bitesizebio.com/62871/what-is-cryo-electron-microscopy/ 2. Cryo-EM Sample Prep: 5 Crucial Considerations. Available at: https://bitesizebio.com/62619/cryo-em-sample-prep/ 3. A Short History of Cryo-Electron Microscopy: Available at: https://bitesizebio.com/62839/history-of-cryo-electron-microscopy/

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25 — Phenol extraction of DNA is a commonly used method for removing proteins from nucleic acids, for example, to remove proteins from cell lysate during genomic DNA preparation.

It's commonly used, but not well understood.

Listen to this episode to get a quick explanation of how phenol extraction of DNA works.

Visit the original article to see handy diagrams on how phenol extraction works. [1] To get more help and advice on DNA extraction, read our related articles and discover how chloroform can clean up your phenol extractions, [2] learn how ethanol precipitation works, [3] and decide if ethanol or isopropanol is best for precipitating your samples. [4]

Resources: 1. The Basics: How Phenol Extraction of DNA Works. Available at: https://bitesizebio.com/384/the-basics-how-phenol-extraction-works/ 2. Practical Application of Phenol-Chloroform Extraction. Available at: https://bitesizebio.com/3651/practical-application-of-phenol-chloroform-extraction/ 3. Ethanol Precipitation of DNA and RNA: How it Works. Available at: https://bitesizebio.com/253/the-basics-how-ethanol-precipitation-of-dna-and-rna-works/ 4. DNA Precipitation: Ethanol vs. Isopropanol. Available at: https://bitesizebio.com/2839/dna-precipitation-ethanol-vs-isopropanol/

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24 — How can you best prepare for a postdoc interview? Here we cover 10 questions that are often encountered during the job-hunting process.

Preparing answers to these questions, alongside doing some background research about the research group and PI, can give you the edge in securing that postdoc.

You can recap these top 10 questions anytime by visiting the full article on popular postdoc interview questions. [1]

If you are looking for further interview advice, make sure you check out our top 10 interview tips, consider how you might concisely describe your research so far, and get advice on what to wear for the interview.

Resources: 1. Postdoc Interview Preparation: Sample Questions and Answers. Available at: https://bitesizebio.com/10393/postdoc-interview-preparation-sample-questions-and-answers/ 2. 10 Great Tips To Make A Good Impression At Your Interview. Available at: https://bitesizebio.com/6696/10-great-tips-to-make-a-good-impression-at-your-interview/ 3. Can You Describe Your Research in 30 Seconds? 60? Available at: https://bitesizebio.com/13639/can-you-describe-your-research-in-30-seconds-60/ 4. GOT AN INTERVIEW! What to wear? What to wear? Available at: https://bitesizebio.com/6261/got-an-interview-what-to-wear-what-to-wear/

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23 — Creativity in Science: How a Good Imagination Can Help Your Research

If you're stuck in a research rut in the lab, developing your creativity can help you find new solutions to current problems that may be impeding your scientific progress.

In this episode, we explore 3 important questions you should consider to help spark your creativity in the lab and provide 8 simple tips to help achieve this.

Read the full article on boosting your creativity in science.

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22 — Research often requires you to use dangerous chemicals. From caustic acids and bases to pH solutions and toxic reducing agents, chemical hazards abound in the lab.

In this episode, we'll take a look at ten dangerous chemicals in the lab and the harm they can cause you.

Want to develop your understanding of chemical safety? Why not read the full article, [1] where you'll find lots of helpful resources and further reading. If you fancy a deeper dive into all aspects of lab safety, then check out the Bitesize Bio lab safety eBook. [2]

If you're a bit rusty on your good laboratory practice, definitely read 10 Stupid Lab Safety Mistakes [3] and see how many sins you commit. And finally, we all rely on our PPE for protection and safety. Be sure to take a look at our 10 Common PPE Sins for a quick brush-up. [4]

Resources: 1. Ten Bad Chemicals in the Lab and What They do to You! Available at: https://bitesizebio.com/10470/ten-bad-chemicals-in-the-lab-and-what-they-do-to-you/ 2. The Bitesize Bio Guide to Lab Safety eBook. Available at: https://bitesizebio.com/wp-content/uploads/2021/08/The-Bitesize-Bio-Guide-to-Lab-Safety.pdf 3. 10 Stupid Lab Safety Mistakes. Available at: https://bitesizebio.com/1899/stupid-lab-safety-mistakes/ 4. 10 Common PPE Sins. Available at: https://bitesizebio.com/9850/10-common-ppe-sins/

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21 — Do you know the difference between cell confluency and cell number? Can you measure cell confluency accurately? Cell confluency measurements are essential in cell based experiments. Listen to this episode to learn what cell confluency is and different quantification methods.

Read the original article to get visual guides to help you understand and measure your cell confluency accurately. [1]

Do you want more information to help you perfect your cell culture? Check out related articles to learn how to get the right passage number for your cells and how to culture adherent cells like HEK293's. [2,3]

Resources: 1. How Confluent Are Your Cells? A Beginner’s Guide to Measuring Cell Culture Confluency. Available at: https://bitesizebio.com/63887/cell-confluency/ 2. What’s in a Number: Getting the Right Passage in Cell Culture. Available at: https://bitesizebio.com/13685/cell-culture-passage-number-explained/ 3. What the HEK? A Beginner’s Guide to HEK293 Cells. Available at: https://bitesizebio.com/45489/guide-to-hek293-cells/

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20— Have you ever wondered how Laemmli buffer actually works? In this episode of Mentors At Your Benchside, we talk through the different components of Laemmli buffer, what they do and why they are essential for your SDS-PAGE experiments.

Read the full article to learn more about this buffer and get a handy Laemmli buffer recipe. [1]

Looking for more information on SDS-PAGE? Discover the theory behind SDS-PAGE and get advice on how you can cast the perfect SDS-PAGE gel. [2,3] You can also download our useful SDS-PAGE protocol PDF that contains simple buffer recipes, gel recipes, and a neat casting protocol. [4]

Resources:

  1. Laemmli Buffer: What Is It for Anyway? Available at: https://bitesizebio.com/44540/laemmli-buffer-what-is-it-for-anyway/
  2. How SDS-PAGE Works. Available at: https://bitesizebio.com/580/how-sds-page-works/
  3. A Simple SDS-PAGE Gel Recipe and 10-Step Casting Protocol for Perfect Gels. Available at: https://bitesizebio.com/59429/sds-page-gel-recipe/
  4. Bitesize Bio's SDS-PAGE Protocol PDF Cheat Sheet. Available at: https://bitesizebio.com/sds-page-protocol-pdf/

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19 — Listen to this episode to discover what alternative splicing is, the history of how it was discovered, and get key examples of splicing in action.

Read the full article to learn more about alternative splicing, including a visual diagram of how splicing works. [1]

Read our related articles to find out how alternative splicing can affect your experiments and discover methods for detecting splice variants. [2,3]

Resources:

  1. What is Alternative Splicing, and Why Is It Important? Available at: https://bitesizebio.com/10148/what-is-alternative-splicing-and-why-is-it-important/
  2. How Can A Single Mutation Affect Splicing Regulation? Available at: https://bitesizebio.com/10307/how-can-a-single-mutation-affect-splicing-regulation/
  3. How to Detect Alternative Splicing Variants. Available at: https://bitesizebio.com/10138/how-to-detect-alternative-splicing-variants/

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18 — Why are SDS-PAGE gels run vertically? What would happen if we ran them horizontally? Has anyone ever tried? Discover the answers to these questions and more in this episode of MAYB.

To see what others are saying and join in the conversation, head over to the comments section in the original article on why SDS-PAGE is run vertically.

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17 — Why do some plasmids give a better protein yield than others? It may have a lot to do with the plasmid copy number. In this episode we talk about what plasmid copy number means, why it is important and how you can manipulate it to get the most out of your experiments.

To learn more about plasmid copy number, read the full article on our site.

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16 — Is your viva on the horizon? Many people think viva exams are going to be painful. But what if you could make your viva go smoothly and maybe even enjoy it? Listen to our top 10 viva tips to get advice from a viva survivor.

To learn more about surviving your viva, read the full article on our site.

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15 — In the last few years, CRISPR-Cas9 has become a popular genome editing tool, but have you ever wondered where it came from? In this episode we explore the history of CRISPR-Cas9, from the first CRISPR discovery in 1987 to current applications in targeted genome and epigenome editing.

Read the full article to learn more about the history of CRISPR-Cas9 and to see a timeline of discoveries.

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14 — Do you know how accurate and precise your measurements are? Imprecise and inaccurate measurements can have a dramatic impact on your results. Listen to get 8 top tips for making your measurements more accurate and precise.

To learn more about accuracy and precision, read the full article on our site.

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13 — There are now hundreds of different tailored fluorescent proteins to choose from that can improve your experiments in the lab.

What are the key considerations when choosing a fluorescent protein for your experiment? Should you consider using a fancy new fluorescent protein? Where can you find the best resources to help you out?

Find out the answers to these and more in this episode of Mentors At Your Benchside.

Please read the full article, which includes our super helpful table of fluorescent proteins and their properties!

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12 — As a follow-up to our episode about ethanol precipitation of DNA and RNA, this episode explains the differences between DNA precipitation in ethanol and isopropanol, helping you to figure out which method is the best choice for your experiment.

Read the full article for handy protocol tips, the differences between using ethanol and isopropanol, and when to use each method.

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11 — Fluorescence is undoubtedly one of the most important and useful tools in a biologist’s toolbox. But do you actually know how fluorescence works?

In this episode, discover what the three steps of fluorescence are, and how fluorescence can be used in flow cytometry.

Read the full article for a breakdown of the key points of fluorescence.

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10 — As you probably know, there are different types of ethanol found in biology labs. It's a versatile solvent used in dozens of experiments and procedures, including disinfection, DNA precipitation, and tissue dehydration.

But which type of ethanol should you use for your application? What's the difference between the types of ethanol in your lab? And how do you handle it appropriately?

In this episode, we answer these questions, providing you with the information you need to keep your research producing top-notch results. Read the full article on Which Type of Ethanol You Should Use for links to additional resources on laboratory applications of ethanol.

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9 — One of the most commonly used cell lines in molecular biology labs is the Human Embryonic Kidney HEK293 cell line.

Listen to this episode to find out all about the history of HEK293 cells and how to work with them.

Read the full article for more details about working with HEK293 cells

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8 — You probably have or will use SDS-PAGE at some point to separate proteins, but do you really understand how this technique works? Knowing how SDS-PAGE works means you can tweak and troubleshoot your technique as well as impress your supervisor and lab mates.

In this episode, we take you through how SDS-PAGE works, including what SDS does, why you need to use a reducing agent like DTT or beta-mercaptoethanol, and the critical importance of the stacking gel.

Read the full How SDS-PAGE Works article to see helpful visuals for how this technique works and access the table showing the protein sizes that different acrylamide percentages can separate.

Expand your knowledge by buffing up on laemmli buffer and get our Guide to Gradient Gels. If you pour your own SDS-PAGE gels, take a deep dive into the chemistry of how gels work and learn how to pour perfect gels every time with our Simple SDS-PAGE Gel Recipe with 10-Step Casting Protocol.

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7 — In this episode, we cover how jellyfish were able to have a huge impact on biology through the discovery and development of GFP.

Using GFP is now ubiquitous in pretty much all fields in biology, and we'll take you through how three Nobel Laureates developed this valuable research tool. [1]

Many of the applications for GFP are microscopy-based, and we'll discuss how you can utilize GFP for translational and transcriptional fusions, FRAP, FLIP and FRET experiments in the lab. [2,3]

Read the full article for more useful links, hints, and tips on using GFP in your experiments. [4]

Resources: 1. Press release. NobelPrize.org. Nobel Prize Outreach AB 2022. Fri. 1 Jul 2022. Available at: https://www.nobelprize.org/prizes/chemistry/2008/press-release/ 2. Fun With FRAP! Fluorescence Recovery After Photobleaching for Confocal Microscopy. Available at: https://bitesizebio.com/19946/fun-with-frap-fluorescence-recovery-after-photobleaching-for-confocal-microscopy/ 3. Using Flow Cytometry for Fluorescence Resonance Energy Transfer. Available at: https://bitesizebio.com/21935/using-flow-cytometry-for-fluorescence-resonance-energy-transfer/ 4. How a Jellyfish Changed Biology: the Discovery and Development of GFP. Available at: https://bitesizebio.com/13390/gfp/

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6 — Ethanol precipitation is a commonly used technique for concentrating and de-salting nucleic acid preparations in an aqueous solution.

In this episode, we'll bring you up to speed on how ethanol precipitation works, including the importance of solubility, the roles of salt, ethanol, and temperature, plus a few helpful tips on the side.

Read the full article [1] to learn more about the ins and outs of ethanol precipitation and other DNA clean-up approaches.

Resources: 1. https://bitesizebio.com/253/the-basics-how-ethanol-precipitation-of-dna-and-rna-works/

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5 — Have you ever chilled beer on dry ice from the lab? Does your wardrobe consist mainly of free T-shirts from companies at conferences? Have you ever wondered what the distilled water in the lab tastes like?

If any of these questions apply to you, then tune in to this episode, as we cover more funny and telling signs that you're a true scientist.

Read the full article to discover the difference between a Science Fan and a bona fide Scientist.

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4 — PCR is a useful lab technique used to copy, sequence or quantify DNA. If you're new to PCR, this episode is for you. We cover the five things you need to get started with PCR and explain how to run a polymerase chain reaction.

Read the full article to learn more about setting up a PCR.

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3 — In this episode of Mentors At Your Benchside, listen to a short history of cryo-electron microscopy—the Nobel Prize-winning technique revolutionizing molecular and structural biology.

The journey takes us from the inception of cryo-EM- obscure, inferior, and derided- to the present-day competition for access to the incredibly powerful Krios microscopes.

It's all about the power of an image.

And speaking of images, be sure to read A Short History of Cryo-Electron Microscopy for a graphical timeline and some stunning cryo-EM structures.

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2 — Micropipettes are the bread and butter instrument of a lab, helping you to accurately dispense minute amounts of liquid. But these tools are only trustworthy if they are well maintained and handled appropriately. Listen to the latest episode of Mentors At Your Benchside to uncover top tips for precise pipetting.

Want to know more about correct pipetting technique? Access the original article on 17 Ways to Avoid Pipetting Errors, download the Gilson Guide to Pipetting, and read the Nature article showing the effect of sample temperature on pipetting volume.

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1 — Is it worth doing a PhD? This is a question that probably plagues every research student at some point in their career.

In this episode, we explore 5 important questions you should consider before embarking on a PhD.

Read the full article for more advice before making the difficult decision to pursue a PhD after getting your Master’s degree. [1]

If you are looking for further advice, make sure you check out our article with pointers for PhD students. [2] A good PhD supervisor is worth their weight in gold and finding a good mentor should be a priority. [3] And, if you’re sure that a PhD is the right move for you, then search for PhDs in Biological and Medical Sciences to find the right PhD to suit you. [4] Finally, read our handy article that lists some alternative career options for scientists. [5]

Resources: 1. Is it Worth Doing a PhD After a Master’s? Available at: https://bitesizebio.com/11022/is-it-worth-doing-a-phd-after-a-masters/ 2. 10 Do’s and Don’ts for PhD Students. Available at: https://bitesizebio.com/articles/10-dos-and-donts-for-phd-students/ 3. Picking an Advisor: The Good, The Bad, and The Ugly. Available at: https://bitesizebio.com/articles/picking-an-advisor-the-good-the-bad-and-the-ugly/ 4. Find a PhD. Available at: https://www.findaphd.com/phds/biological-and-medical-sciences/?10gc00 5. Alternative Careers For Scientists. Available at: https://bitesizebio.com/301/alternative-careers-for-scientists/