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We narrowed to 466 results for: cat.3

Showing: 241 - 260 of 466 results

  1. Make a Splash: Notions of Scientific Impact Are Evolving

    Type
    Blog Post
    Published
    Dec. 5, 2014, 2:54 p.m.
    ...the impact of research" (2013) Scientific Reports 3, Article number: 1649 doi:10.1038/srep01649     ... citations for recent articles. Of course, a publication in Science or Nature is always nice, but in the... lesser-known journal as it is in a top-tier publication. Accessibility is surely also behind the increase...increase in citations for older publications. (As an interesting aside, Nature recently reported that the...in a solution.) But are citations and journal publications really the best way to measure impact? As that...and what it’s made of. Increasingly, journal publications alone aren’t enough. Scientists are sharing ...consider and quantify the impact of scientific publications. Ventures like Impact Story seek to find ways...

  2. Antibody Validation for Flow Cytometry

    Type
    Blog Post
    Published
    Sept. 10, 2024, 1:15 p.m.
    ... them. For intracellular targets, we usually test 3 different fix/perms (methanol, PFA-saponin, PFA-triton.... The approach we suggest is summarized in Figure 3. The principle is to confirm the antibody can detect...-use of an individual experiment.   Figure 3: Our recommendations for an approach that may be used...procedure enables quantification of antibody performance in major research applications. eLife, 12, RP91645...that the antibody being published doesn’t always indicate the presence of supportive data. To be supportive...that the antigen being detected in the intended application — here, flow cytometry — is the desired target...fixation-permeabilization protocol. Although the expected location of the target is an important factor in deciding...

  3. Twenty Years of Sharing: Addgene's Viral Vector Service

    Type
    Blog Post
    Published
    July 30, 2024, 1:15 p.m.
    ...controls” category, which includes things like viral vectors that deliver GFP.   Figure 3: A) Cumulative... why they are the most commonly requested (Figure 3). Over 400 biosensors were distributed in 2023 alone...in 2018. By the end of 2023, our catalog had grown to 879 viral catalog items (Figure 1). The service caught...repository. GCaMP, a calcium indicator (biosensor, by Addgene’s categorization) was first developed in 2001....   Figure 2: Numbers of AAV tools, by category, available from Addgene as of 2023. A large... calcium and voltage sensors, are the broadest category of viral vector tools, which may help explain ...capsid of the AAV, many of the vectors in Addgene’s catalog are offered in different serotypes. In fact, the...

  4. Twenty Years of Sharing: Expanding Accessibility

    Type
    Blog Post
    Published
    Nov. 21, 2024, 10:47 p.m.
    ...the world — and we really do mean all over (Figure 3). We continue to add new posts every week, and we’...beautifully designed and easy-to-reference eBooks. Figure 3: Global readership of the Addgene blog in 2023. Views...logistical barriers, allowing people to access a wide catalog of plasmids from all over the world. This idea,...into the accessible. Physical access Addgene is located in the USA, but our materials are available to ... items to countries with a distributor. Arrows indicate the year we entered into an agreement with a distributor...accessibility to researchers around the globe. Addgene’s educational resources As Addgene built out our scientific...guides, protocols, and collections of 2023. Educational Resource Top Five by Views Guides CRISPR...

  5. Antibodies 101: Normalization and Loading Controls for Western Blots

    Type
    Blog Post
    Published
    April 8, 2025, 1:15 p.m.
    ...errors in experimental design and gel quantification. Figure 3: In a perfect world, protein concentration...versus the amount of protein loaded on the gel (n=3). Data is presented as mean ± SEM. Adapted from Analytical...normalization and loading controls needed for relative quantification of a western blot — and why you might want ...accurately compare different lanes? In relative quantification, the POI bands are normalized to the loading...and it’s also problematic for computational quantification. Outside the linear detection range, band intensity...common error associated with Western blotting quantification” (Gilda & Gomes, 2013). To address this source... Gilda & Gomes, 2013. Figure 7: Semi-quantification of liver lysate using different loading controls...

  6. An Introduction to Adenovirus

    Type
    Blog Post
    Published
    Oct. 3, 2023, 1:15 p.m.
    ...transfer plasmid with the E1 and E3 (Early 1 and Early 3) genes deleted. These genes’ functions are rescued...Degeneration in Tissue Culture. Proc Soc Exp Biol Med. 84(3), 570–573. https://doi.org/10.3181/00379727-84-20714...and late gene transcription) is demarcated by viral genome replication (Harrach, 2014). Given that the...encapsidate new virions) are not expressed. Note that replication-competent AdV vectors also exist and are used...the final topic, which is that natural AdVs, replication-competent viruses with a recombinant genome, ...Hermiston, T. W. (2003). Multigene expression from a replicating adenovirus using native viral promoters. Mol ...does not require de novo viral gene expression: Implications for gene therapy. Proc Natl Acad Sci U S A, ...

  7. Tips for Getting a Faculty Position

    Type
    Blog Post
    Published
    July 20, 2023, 1:15 p.m.
    ...understand your proposal to give you proper consideration. 3. Present an easy to follow seminar See item 2. Attendees...? How will your approach resolve this problem? (2-3 sentences) What will be the focus of your first... do need multiple first/corresponding author publications in quality journals. It helps to come from the...a job. The currency of scientific success is publications and grants. 2. Write succinct and easy to understand...humbling. My conviction that I had a flair for communication was rapidly dispelled. She would ask me, "Is...succinct. Slide decks leads to the opposite and can suffocate an exciting idea in a swamp of unnecessary details...essential for human health. Failure to do so is implicated in several human diseases. Proper patterning ...

  8. CRISPR 101: Validating Your Genome Edit

    Type
    Blog Post
    Published
    Nov. 3, 2022, 12:15 p.m.
    ...  Fig. 3: Restriction enzyme screening for resistivity to digestion, indicating targeted edits... originally written by Melina Fan and updated Nov 3, 2022 by Susanna Stroik. You’ve designed your gRNA...how many copies you are looking for. Secondly, categorize your edit – is it any frameshift mutation? A ...a manageable number of the higher probability locations. If you’re worried about off-target effects, you...Tao Chen, Jos Jonkers, Bas van Steensel. Easy quantification of template-directed CRISPR-Cas9 editing. (...and variant-aware in silico off-target site identification for CRISPR genome editing. (2019) Bioinformatics...

  9. Addgene's Website Update

    Type
    Blog Post
    Published
    April 8, 2024, 2:15 p.m.
    ...without scrolling up and down the page.  Figure 3: The Education & Tools menu Further down What happens if ...and easily navigate to educational resources, tools, collections in our catalog, and the Addgene Help ...search bar. And if you’re in the mood to browse our catalog, you can use the links under the search box to ... mission, links to our deposit, request, and educational resources page, and previews for our three most...

  10. Starter Guide to induced Pluripotent Stem Cells (iPSCs) Part 2:  Reprogramming and Transdifferentiation

    Type
    Blog Post
    Published
    Nov. 6, 2018, 1:12 p.m.
    ... back to a pluripotent stage (iPSC formation) [2, 3]. The iPSCs then proliferate and redifferentiate to..., 2007. 131(5): p. 861-72. PubMed PMID: 18035408. 3. Takahashi, K. and S. Yamanaka, Induction of pluripotent...converting one cell into another. Cell Stem Cell, 2008. 3(4): p. 382-8. PubMed PMID: 18940730. Additional Resources...joined Cell Press to pursue a career in science communication and publishing after completing her postdoctoral...PMC4096605. 30. Lamba, D.A., et al., Generation, purification and transplantation of photoreceptors derived...

  11. Filming Science Videos in the Age of Social Distancing

    Type
    Blog Post
    Published
    May 20, 2021, 1:15 p.m.
    ...back to the drawing board.  Cycle 3: A Return to HQ Figure 3: Even Blugene is practicing social...Creating great educational science videos is tough. Is the content accurate? Are we conveying complex... had set up involved multiple people in tight locations. Conference rooms for on-screen presenters! Labs...wasn’t going to work for the majority of our educational videos. In addition, it’s really asking a lot...receiver, to beam the camera’s image to my remote location, live. After doing a bit of looking, I found an...

  12. Transferable Skills Guide: Time Management

    Type
    Blog Post
    Published
    Dec. 5, 2017, 1:52 p.m.
    ...up the experiment. The first way, it will take you 3 days to complete the entire experiment, but you’ll...be quite difficult. In my experience, planning has 3 components: A mechanism for blocking off time for... the planning section below, it’s important to dedicate specific amounts of time to specific tasks beforehand...instance, if I don’t have draft blog post ready for publication for tomorrow, I’d better upload that post from...handle doing a particularly annoying task and then dedicating that much time to it each day. Once you get over...Student Community Learn about Careers in Science Communication Resources at Addgene.org Check out Careers...

  13. How to Negotiate a Successful Lab Start Up Budget

    Type
    Blog Post
    Published
    Sept. 1, 2015, 2:30 p.m.
    ... of how much you can expect to use in the future. 3. Identify the skills needed to use these tools Outline...then it’s worth working within their limitations. 3. Always provide value to others This is a non-profit.... After identifying all the major equipment, categorize all of your minor tools, like pipets, or mini-centrifuges...titles in the regions where the host institute is located. For example, salaries in Kansas versus salaries... most start-up P.I.’s. It doesn’t have to be complicated, or difficult to create this list. Start BEFORE...discounts, collaborations, access to internal award applications, etc. If this is the institute that can help...

  14. Controlling for Off-target Effects with a New Genome-wide CRISPR Screen Design

    Type
    Blog Post
    Published
    Sept. 13, 2018, 1:55 p.m.
    ...PMC4320685. 3. Fu, Yanfang, et al. "Improving CRISPR-Cas nuclease specificity using truncated guide RNAs...negative controls for genome-wide CRISPR screens; and 3) safe-targeting guides, which target genomic sites... potential control, and provide evidence that truncated gRNAs have improved specificity with only a small...toxicity in high-throughput screens." Nature communications 8 (2017): 15178. Pubmed PMID: 28474669. Pubmed...

  15. Synthetic Biology, Artificial Chromosomes, iGEM & More - Interview with Tom Ellis

    Type
    Blog Post
    Published
    Nov. 29, 2017, 2 p.m.
    ...research, training, startups, and real applications of SynBio. Chapter 3: Synthetic biology as the engineering...synthetic genome project and constructing ever more complicated biological devices. Chapter 6: - Making research...Addgene Blog Learn about the Synthetic Biology Education Nonprofit BioBuilder Plasmids 101: Golden Gate...

  16. QC Sequencing Technologies at Addgene

    Type
    Blog Post
    Published
    July 15, 2025, 1:15 p.m.
    ...from the synthesis-based sequencing methods (Figure 3). It uses (aptly named) “nanopores” that are attached...based on these characteristic drops. Figure 3: Overview of Nanopore sequencing technology. Created...differences due to in silico variations and lack of verification. To address this issue, the QC team developed...Nanopore sequencing technology, bioinformatics and applications. Nature Biotechnology, 39(11), 1348–1365. https...

  17. Viral Vectors 101: Voltage Indicators

    Type
    Blog Post
    Published
    Jan. 30, 2024, 2:15 p.m.
    ... sensing!   Figure 3: Components of the types of voltage indicators reviewed.   References...Voltage indicators are voltmeters for cells! In this blog we will review how these indicators work, their...fluorescence or voltage indicators.   Viral Vectors and Voltage Indicators As previously mentioned...Enhanced genetically encoded voltage indicators advance their applications in neuroscience. Curr Opin Biomed...Cellular communication and function depend on potential energy. Cellular activities like action potentials...their general applications, and why viruses are essential to their use as biological tools. Why Use Voltage...Voltage Indicators? Electrical signals are integral to many facets of biology. For example, many heart...

  18. PCR Applications for Copy Number Variation Assays

    Type
    Blog Post
    Published
    April 26, 2022, 1:15 p.m.
    ...quantitative real-time PCR. J Microbiol Methods. 2006 Jun;65(3):476-87. doi: 10.1016/j.mimet.2005.09.007. Epub 2005...run in triplicate.  The nice thing about qPCR is that since it measures relative quantification - that... not need to be run in triplicates. ddPCR is an extremely accurate application, even in areas of the genome...Digital PCR for AAV QuantificationPolymerase Chain Reaction Overview and Applications Resources on Addgene.org...blog post, we're going to focus on PCR-based applications (qPCR and ddPCR.) qPCR Quantitative/real-time...range of RQ values as noted above.   In both applications, results can be affected by DNA quality and ...absolute quantitative data, instead of relative quantification.  Even though no one option is perfect, with...

  19. Delivery Methods for Generating iPSCs

    Type
    Blog Post
    Published
    April 17, 2018, 1:37 p.m.
    ...228, no. 2 (2012): 267-75. PubMed PMID: 22767332.  3. Kim, Dohoon, Chun-Hyung Kim, Jung-Il Moon, Young-...PubMed PMID: 19337237. PubMed Central PMCID: 2677165. 3. Jia, Fangjun, Kitchener D. Wilson, Ning Sun, Deepak... deriving human iPS cells." Nature Methods 7, no. 3 (2010): 197-99. PubMed PMID: 20139967. PubMed Central...serially transfected using a cationic vehicle. The following synthetic modifications are used to protect the... to verify there’s no genomic integration Replicating EBNA1 episome Non-integrating Medium Medium ...creates heterogeneous iPSC cell lines, which can complicate comparisons made between lines. Incomplete silencing...Retroviruses are not considered safe for clinical applications.     Lentiviral: Lentiviral vectors infect dividing...

  20. CRISPR Methods for Bacteria: Genome Engineering, CRISPRa, CRISPRi, Base Editing, and More

    Type
    Blog Post
    Published
    Sept. 28, 2020, noon
    ...Originally published Mar 3, 2016 and last updated Apr 13, 2021 by Will Arnold. Although CRISPR systems...a subsequent curing protocol that requires only 2-3 hours incubation. E. coli and T. citrea scarless editing...the QCascade DNA-targeting module with the crRNA, (3) three transposase proteins, and (4) the donor DNA...for successful modifications, efficiency can be low, especially for larger modifications. What’s the solution...several potential CRISPR applications. First, CRISPR can be used to target locations in the genomes of pathogenic...tools available for bacteria and some of the applications for which they’ve been used. The beginnings ... of Enterobacteriaceae, without the need for modification. This finding suggests that the system may be...
Showing: 241 - 260 of 466 results