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  1. How Dry Ice Affects Viral Vector Sample pH & How to Avoid It

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    Blog Post
    ...viral samples. Read on to learn how aqueous samples might be affected by dry ice, and specifically how dry... removing the caps, incubating the tubes in an upright position for 30 seconds, and then recapping the...to prevent any pH change, as we still observed a slight change in pH (from 7.4 to 6.8). It’s possible that...
  2. With Our New Viral Service, We're Taking CRISPR Further!

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    Blog Post
    ...as virus? “Like all things in science, getting a high titer Cas9 lentivirus prep takes a bit of time and...lentivirus, we are providing lentiviral preps containing highly requested gRNAs including those targeting EGFP,...library has retained gRNA representation, produce high titer lentivirus from the library, ensure gRNA representation...
  3. Four Factors that Differentiate the Stem Cell Field

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    Blog Post
    ...Director of Biology, Lianna Swanson, suggested that I might be able to attend the 10 Years of iPSCs Symposium...or tertiary, or non-existant). On the very first night of the iPSC symposium, a panel of thought leaders...Resources on the Addgene Blog Learn about Efforts to Fight Rare disease with iPSCs Read About Addgene's Outreach...
  4. Visualizing Translation at the Single Molecule Level

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    Blog Post
    ...determine genome-wide translational frequency. Although highly useful, this technique requires extensive sample... nucleus to bind cognate untranslated mRNAs. The high specificity and resolution of this system are achieved...SunTag Catch up on Your GFP Background Choose the Brightest Fluorescent Protein Resources on Addgene.org ...
  5. Behind the scenes: Addgene’s new search engine and more

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    Blog Post
    ...narrow down search results by adding more terms.  Weighting We determined the relative importance of different...given resource, and designed the search engine to weight search results differently according to where a...matches of a name in the depositor field will rank higher than matches of the same name in the publication...
  6. Why and how to start studying chromatin (with Addgene's help)

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    Blog Post
    ...this context, but also specifically study it. They might be researching enhancer elements that control the...research describe the production of plasmids that might be useful for your work. The links below direct ...techniques, the posts below may steer you in the right direction! CAPTURE-ing Chromatin Interactions: Using...
  7. Screening for Successful Genome Editing with Digital PCR

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    Blog Post
    ...of mutant target (as low as 20 pg or 0.02%) in a high background of wild type targets. Comparatively, ...M. A Digital PCR-Based Method for Efficient and Highly Specific Screening of Genome Edited Cells. PLoS...PubMed Central PMCID: PMC4735761. 6. Fu, Y. et al. High-frequency off-target mutagenesis induced by CRISPR-Cas...
  8. 7 Tips to Secure a STEAM Internship This Summer

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    Blog Post
    ...their former interns to fill entry-level positions right out of college. Prior to March 2020, internships... a nationwide database of  STEAM internships for high school, college, and graduate students. In order...interview, inspect your technology, background, and lighting for a smooth performance. Most importantly, make...
  9. GCE4All: Making Genetic Code Expansion Accessible

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    Blog Post
    ...complicated? Well, while the techniques are straightforward, the systems – the cells growing and producing...And on top of that you need to worry about getting high enough expression of your protein of interest. If...by using Addgene’s Blue Flame award to identify highly requested GCE plasmids. But they’d also love scientist...
  10. Viral Vectors 101: The AAV Retrograde Serotype

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    Blog Post
    ...variant that efficiently infects neurons, directs high-level transgene expression, and has retrograde functionality...genetic tool delivered by the AAV.   AAVrg requires high titers for efficient retrograde transport. For recombinase-dependent... at the injection site (Fischer, KB. 2019). The higher the titer, the more likely you are to see spurious...
  11. Plasmids 101: Blue-white Screening

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    Blog Post
    ...). As shown on the representative plate to the right, colonies with an insert-containing plasmid have... plates at 4C for few hours after the initial overnight incubation increases pigment precipitation, enhances...colonies. Take care in making your plates: X-gal is light and temperature sensitive and needs to be added ...
  12. How to Make Friends and Meet People at a Scientific Conference

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    Blog Post
    ...interested in the same things you are on a deep level. Right away you have something in common. Namely, the scientific... field will know about grants and projects that might help your work Tenure can depend on your national...some of my best studies were designed over late night poker games at Gordon Conferences). You don’t want...
  13. Enhancing CRISPR Targeting Specificity with eSpCas9, SpCas9-HF1, & HypaCas9

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    Blog Post
    ...have less complementarity to the gRNA, they have a higher propensity to reform double helices and decrease...measurements to determine which portions of Cas9 might be important for nuclease specificity. They found...PMC4176945. 4. Kleinstiver, Benjamin P., et al. "High-fidelity CRISPR–Cas9 nucleases with no detectable...
  14. Teaching an Old DOG New Tricks: Controlling Protein Activity with GFP

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    Blog Post
    ..., TdTomato was seen only in cells with GFP, at a high activation frequency of 56-93%. In the converse ...Cre-DOG lacks the toxicity that can be seen with high levels of transcription activation domains. Both...constructing split variants should be relatively straightforward, but it is also possible to create split versions...
  15. Summer SciComm Series: Cognitive Load

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    Blog Post
    ... read an 11-page Cell paper - and sometimes, it might actually take me less time to read the book.  Intuitively...science communication, but the more you use, the higher cognitive load you are asking your audience to ...like the professor who once decided that to teach high school students PCR, they first had to understand...
  16. Plasmids 101: The protein expression toolbox

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    Blog Post
    ...working with an endogenous locus. The most straightforward way to turn off expression permanently is to...- this section is for you! Many of the tools highlighted in this section can be used to turn expression...
  17. Antibodies 101: Conjugation

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    Blog Post
    ...antibodies that produce detectable signals like light or color. In this post, we’ll go over some of the...chemiluminescent reaction. Chemiluminescence, which is light produced by a chemical reaction, can be detected...Whatever the conjugate, the molecules must somehow be tightly linked to your antibody. This chemical coupling...
  18. Human Germline Editing Using CRISPR

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    Blog Post
    ...zygotes at 18 hr post fertilization. They observed higher targeting efficiency than in iPSCs, but with the...scientists proceed with caution and with proper oversight from regulatory and ethics committees comprised... Check out Our New CRISPR Topic Page Read about High Fidelity CRISPR Variants Target Multiple Genes at...
  19. New Tool for Lineage Tracing: The ClonTracer Library

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    Blog Post
    ...chronic myeloid leukemia. Bhang says the work highlighted the importance of developing more potent ABL1...clonal dynamics in response to cancer therapy using high-complexity barcoding." Nature medicine 21.5 (2015...
  20. Career Coaching for Scientists: Why and Where Do I Find One?

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    Blog Post
    ...launched an online career coaching program that might make her coaching more affordable for you. There...transitioning a scientist from academia to industry, you might want to consult the Cheeky Scientist. Their motto...Successful Industry Professionals”. This larger shop might appeal to some although most scientist coaches can...
  21. Mouse Modeling, Part 1: Genetically Engineered Mice

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    Blog Post
    .... In the first blog post in this series, I’ll highlight terminology you should be familiar with before...the use of long single-stranded DNA have led to a higher efficiency of homologous recombination for precise...
  22. Pathways Over Time Plasmids Engage Students in Functional Genomics Research

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    Blog Post
    ...undergraduate research questions. The idea is straightforward. Instructors first select a multi-gene pathway...O'Connor (left with Lab Director Doug Warner on the right) has taught courses in biochemistry, molecular cell...Addgene Videos to Learn about Basic Lab Techniques High School Students Explore Careers at Addgene Resources...
  23. Plasmids for Endogenous Gene Tagging in Human Cells

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    Blog Post
    ...understanding of cell biology. We hope that these high-quality, highly specific plasmids, as well as the instructions...flooding the cell with a plasmid containing regions of high homology to the gene with the cut, we trick the ...
  24. Tips for Technical Support Calls

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    Blog Post
    ...company. This might seem like a no-brainer, but it happens more frequently than you might think. The Addgene... crucial information about a product is printed right on the tube itself! Is the answer to your question...
  25. CRISPR in the Clinic

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    ...host) as well as the introduction of the cancer-fighting component, CAR. Clinical trials are underway to...allele specifically. Early-stage trials showed a high success rate in clearing misfolded protein levels...Regarding effectiveness, if the editing frequency isn’t high enough to make a physiological difference, then ...
  26. Viral Vectors 101: Calcium Sensors

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    Blog Post
    ...ER lumen reaches the sub-millimolar range, much higher than in the cytosol. Thus, for the ER you would...subsequent change in fluorescence only occurs at high calcium concentrations. This will reduce noise and...simultaneous (1) user-controlled illumination with violet light and (2) exposure to increased intracellular calcium...
  27. Viral Vectors 101: Chemogenetics

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    Blog Post
    ...recombinase systems. Picking Ligands Picking the right ligand is also important for building a chemogenetic...pharmacologically selective effector molecules (PSEMs). Higher potency means lower drug doses, which decreases... CH, Coward P, Degtyarev MY, Lee EK, Kwa AT, Hennighausen L, Bujard H, Fishman GI, Conklin BR (1999) Conditional...
Showing: 661 - 690 of 984 results