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Showing: 81 - 120 of 395 results
  1. Luminescent Imaging with Nano-lanterns

    Type
    Blog Post
    ...luminescent imaging a reality, Addgene depositor Takeharu Nagai and colleagues at Osaka University have developed...signal. Since their first publication in 2012, the Nagai laboratory has assembled a collection of multicolored...imaging. Nano-lanterns and your experiments The Nagai laboratory has a done a wonderful job characterizing...
  2. A Look at Addgene's QC Process

    Type
    Blog Post
    ...However, the cloning process — including the propagation of plasmids in bacteria — has many points at ...called Geneious. Here, the raw reads are mapped against a reference sequence, if one was provided. If no...plasmid, and the full QC process is started over again after receiving the replacement plasmid at Addgene...
  3. Quickest Way to Deposit Plasmids: The Deposit Spreadsheet

    Type
    Blog Post
    ...Please indicate which growth strain Addgene should propagate your plasmids in: DH5α, NEB Stable, ccdB Survival...Survival, Pir1, or other. Whenever possible, we propagate plasmids in the standard cloning strain DH5α. For...choose the Pir1 strain. If your plasmid cannot be propagated in any of these standard strains, choose other...
  4. xCas9: Engineering a CRISPR Variant with PAM Flexibility

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    Blog Post
    ... transcription of gene III, permitting phage propagation and keeping that dCas9 sequence in the pool. ...with BioRender.com. After 24 days of phage propagation, Hu et al. isolated xCas9 1.0-1.4 and subjected...were capable of cleavage, they tested the clones against an NNN PAM library in bacteria where cleavage leads...
  5. Transgenic Organisms, Cas9 Gene Drives, and Appropriate Safeguards

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    Blog Post
    ...spreads through the wild population and immunizes it against the first drive. Laboratories interested in building...question), why not use them whenever applicable?Against this, consider the cost of an accidental release...accidental release could delay real-world applications against scourges such as malaria and dengue for many years...
  6. What's Your Organism? Expanding Genomic Tools via the NSF EDGE Program

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    Blog Post
    ...experimental species. Discovering ways to culture, propagate, transform, store, and share all of these new ... eat a caterpillar once, vomit, and never do it again. Cichlids (Scott Juntti) Cichlids are 2,000 fish...cephalopods die after they lay their 1 clutch of eggs? Propagation is thus quite difficult. CRISPR genome editing...
  7. Lab to Office Culture Shock

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    Blog Post
    ...gut-wrenching, but you can get that feeling of camaraderie again in a non-academic career. You might not be in a ...you still find the idea of not holding a pipette again upsetting, there are ways to get back to the bench...opportunities. You can get your hands in nitrile gloves again! The opportunities are there once you start looking...
  8. New Acoustic Reporter Genes: Ultrasound Imaging of Gene Expression

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    Blog Post
    ...tryptone, 5 g/L yeast extract, and 5 g/L NaCl) or on LB-agar plates containing glucose and L-arabinose at 37oC...allowing us to reduce the genetic footprint yet again. This also led to improved expression homogeneity...ultrasound imaging. If needed, resort the cells again for improved purity and contrast. For in vivo experiments...
  9. Viral Vectors 101: Pseudotyping

    Type
    Blog Post
    ...lines expressing galactosyl(alpha1-3)galactosyl (alphaGal) sugars were less stable than viruses produced...express these sugars. (Takeuchi et al., 1997). The alphaGal sugars end up in the envelope and are targets ...targets for complement-based killing by anti-alphaGal antibodies. The VSV-G envelope protein is inactivated ...
  10. Plasmids 101: Control Plasmids

    Type
    Blog Post
    ...every experiment, an investigator needs a standard against which the results can be compared; results from...single experiment wherein Plasmid A (encoding shRNA against human Gene X in backbone Y) was transfected into...included as these provide the baseline/standard against which other samples can be compared. The Empty ...
  11. March for Science

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    Blog Post
    ...then revise their hypotheses and the cycle begins again. No part of this process is inherently political...gutting 38 EPA programs: draft budget  Science Magazine: A grim budget day for U.S. science: analysis ...analysis and reaction to Trump’s plan Science Magazine: NIH, DOE Office of Science face deep cuts in Trump’s ...
  12. Antibodies 101: Multiplex Immunofluorescence

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    Blog Post
    ...secondary antibody that recognizes the primary, wash again, then image. But here’s where the “sequential” part...add the new primary, wash, add secondary, image again, inactivate, and repeat these cycles for all your...yourself. If you can’t find a suitable antibody against your target protein, consider fusing a protein ...
  13. Cancer and the Immune System: Deciphering the Relationship

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    Blog Post
    ...abilities, we’re gaining new ground in the fight against cancer in its many forms. The dichotomous interactions...sequence of immune reactions that aid in the fight against cancer. Sipuleucel-T by the Dendreon Corporation...will more broadly activate the immune response against tumors. Some chemotherapeutic agents induce immunogenic...
  14. How to Deposit Your Plasmids with Addgene

    Type
    Blog Post
    ...Distribution Please indicate which strain Addgene should propagate your plasmids in: DH5α, NEB Stable, or ccdB Survival...Survival.­ Whenever possible, we propagate plasmids in the standard cloning strain DH5α. Please indicate...indicate if your plasmid cannot be propagated in DH5α. For plasmids with highly repetitive sequences (which...
  15. Antibody Validation for Flow Cytometry

    Type
    Blog Post
    ...approach, which focuses on validating antibodies against markers of the human blood leukocyte populations...on human blood leukocytes, including antibodies against these markers. The 371 CD markers characterized..., and include information on tested antibodies against the target. Helpfully, this also includes clone...
  16. #Deckthelab Contest Winners 2017

    Type
    Blog Post
    ...scientists delivered some spectacular photos once again this year! All winners receive an Addgene care package...(@ChiTownBio) and one of our favorite twitter #agarart accounts, Petri dish Picasso (@PetriPicasso) came...
  17. DIY DNA Ladders from Penn State University

    Type
    Blog Post
    ...ladders, the 100 bp ladder works well for both agarose and native polyacrylamide gels. Get Tips on Verifying... to Analyze Your Restriction Digests Make Your Agarose Gel Other Resources Read about Gel Stains on ...
  18. Congratulations, Deck The Lab winners!

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    Blog Post
    ...impressive science-themed holiday decorations yet again. This year, we had two different categories: one...his Christmas tree! It is that time of the year again: miniature #Christmas tree goes up at home!This ...
  19. Top 10 Open Science Developments of 2013

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    Blog Post
    ...Court’s decision to ban gene patents in a case against Myriad, an organization called Free the Data launched...of 304 open access publishers. By the time the magazine went to press, no less than 157 of those journals...
  20. Antibodies 101: Fc Effector Functions

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    Blog Post
    ... antibodies drive an effective immune response against a pathogen. The Fc domain creates a link between...Inhibitory Fc receptors modulate in vivo cytotoxicity against tumor targets. Nat Med. 2000 Apr;6(4):443-6. doi...
  21. Running for Rare Disease, Running for FOP, Running for AJ

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    Blog Post
    ...Senior Director of Biology, is helping us fight against FOP in two ways. First, Addgene is distributing...plasmids with Addgene and join us in the fight against FOP. Second, Addgene will be hosting the AJ’s Boston...
  22. Viral Vectors 101: Parts of the AAV Transfer Plasmid

    Type
    Blog Post
    ...partial loss of an ITR during routine plasmid propagation, with complete ITR loss abolishing AAV packaging...packaging. To prevent ITR loss, it’s best to propagate AAV constructs in recombination-deficient bacterial...
  23. RUBY-Red Siliques

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    Blog Post
    ...applications. But some techniques require you to select against the presence of a transgene instead, which can’...are currently used in these situations to select against CRISPR positive plants, but screening these can...
  24. Comparing Cas9 to NgAgo: Can the Argonautes Best CRISPR?

    Type
    Blog Post
    ...THE RESULTS DISCUSSED BELOW Biologists are going gaga over the newest gene-editing protein - a DNA-cleaving...prokaryotes, and some of these proteins protect against invading DNA. In 2014, Swarts et al. characterized...
  25. Plasmid Cloning by PCR

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    Blog Post
    ...final Forward Primer sequence of 5'-TAAGCAGAATTCATGTGGCATATCTCGAAGTAC-3'. For the Reverse Primer, the design...final Reverse Primer sequence of 5’-TGCTTAGCGGCCGCTCAGTACTTCGAGATATGCCA-3’. Preparing the PCR product for...
  26. Celebrate National Book Month with Addgene

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    Blog Post
    ...lost for an age) fight in the Napoleonic Wars and against something even more sinister. 1000 pages long. ...reads, some are hard. Some I’ll never think about again, some I loved so much I’ll force them on everyone...
  27. Viral Vectors 101: Inverted Terminal Repeats

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    Blog Post
    ...mutations and truncations that can make vector propagation and sequencing a headache. How do I maintain ...integrity and prevent unwanted mutations?  During propagation, mutants rapidly replicate in a growth culture...
  28. Sweating the Small Stuff: Details in the Lab

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    Blog Post
    ...experiment by simply running it unchanged over and over again, and the same goes for your workflow. Next time ...mistake, instead of silently vowing never to do that again (I’ve been there!), think of ways you could change...
  29. Plasmids 101: Yeast Vectors

    Type
    Blog Post
    ...each one requires different elements for vector propagation. This post, along with a future companion post...yeast plasmid) allows for 50+ copies to stably propagate per cell. The copy number of these vectors can...
  30. Transferable Skills Guide: Public Speaking

    Type
    Blog Post
    ...achieve my purpose? Should I go over this slide again? Say, 'Oh, I forgot to mention X, so let's quickly... freezes and then crashes. You’re muted on Zoom again.  These things don’t just happen to you or me (though...
  31. Antibodies 101: Selecting the Right Antibody

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    Blog Post
    ...for every assay. Antibodies that are generated against a linear antigen tend to work very well for applications...compare the staining patterns of multiple antibodies against the same target; tagged protein strategies that...
Showing: 81 - 120 of 395 results