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We narrowed to 858 results for: CAL;

Showing: 561 - 600 of 858 results
  1. Performing In Vivo CRISPR Screens Using the FITS Approach

    Type
    Blog Post
    Published
    May 2, 2024, 1:15 p.m.
    ...important immune cell type, in more complex and physiological microenvironments. These screens have primarily...molecular identifiers, which can improve the statistical power of in vivo screens. Figure 1: Using...Fellow in Arlene Sharpe’s laboratory at Harvard Medical School and is interested in improving CD8+ T cell...
  2. Antibody Validation for Flow Cytometry

    Type
    Blog Post
    Published
    Sept. 10, 2024, 1:15 p.m.
    ...multiple timepoints. When the target of interest is critical to cell survival or proliferation, an additional...a flow cytometry experiment. But validation is critical to ensuring accurate interpretation of your results...to start with a screening procedure in easily genetically modified cell types (top). The specific approach..., A. M., McPherson, P., & Laflamme, C. (2023). Scaling of an antibody validation procedure enables quantification...
  3. Bringing Sustainable Practices to the Lab: Easy Action Items

    Type
    Blog Post
    Published
    April 22, 2019, 12:26 p.m.
    ...alternatives for some of the harmful chemicals in your lab. These chemicals are not only better for the environment... resources about this, and even has a list of biological samples that are stored long term at -70 °C. ...
  4. What's New in CRISPR - Winter 2018

    Type
    Blog Post
    Published
    Dec. 18, 2018, 1:17 p.m.
    ...plasmids available at Addgene. We will still periodically focus on specific CRISPR plasmid tools more ... Feng Zhang’s lab recently developed a platform called SHERLOCK (specific high-sensitivity enzymatic reporter...will help researchers map transcription factor localization and binding via ChiP-seq. Learn more about...
  5. Make a Splash: Notions of Scientific Impact Are Evolving

    Type
    Blog Post
    Published
    Dec. 5, 2014, 2:54 p.m.
    ...papers detailing Nobel Prize-winning research typically weren’t among the most cited. And, as scientific...online, surely times have changed. Altmetrics.org calls to expand our view of what impact looks like and... aren’t enough. Scientists are sharing what they call “raw science” – data sets, code, and, I think it...
  6. A Scientist's Guide to Ebola

    Type
    Blog Post
    Published
    Oct. 16, 2014, 3:01 p.m.
    ...protein present on the virion surface – making it critical for viral attachment and fusion. Once inside a...glycoprotein’s role in infection also makes it a critical component of vaccines and the target of neutralizing...established Ebola Genome Portal at the University of California, Santa Cruz, offers sequence data on five strains...
  7. Quick, Versatile Plant Transgenesis with GreenGate Plasmids

    Type
    Blog Post
    Published
    Jan. 23, 2014, 3:23 p.m.
    ...few years ago, researchers introduced what’s been called a major breakthrough in cloning technology with...cassettes onto a single T-DNA in subsequent rounds, dramatically reducing the time required to generate multi-construct...multi-construct transgenic plants. In the most practical terms, what GreenGate can do is “save you half a...
  8. Top Requested AAV of 2017: pmSyn1-EBFP-CRE

    Type
    Blog Post
    Published
    Jan. 17, 2018, 2:57 p.m.
    ...promoter. It can be used to drive Cre expression specifically in neurons. AAV Delivered Cre - A useful tool...Indeed, this AAV provides you with a means to specifically activate expression of any Cre-dependent gene...Additionally, you could use the retrograde form to specifically express Cre in neurons with axons that extend...
  9. Editor's Choice, August 2016

    Type
    Blog Post
    Published
    Sept. 2, 2016, 1:32 p.m.
    ...sequence in live cells. This technique uses catalytically inactive CRISPR endonuclease (dCas9) fused to...scientists. You can find all of our August posts in chronological order here: Site Directed Mutagenesis by PCR...Single Base Editing with CRISPR Cas9 Activators: A Practical Guide 10 Steps to a Perfect Science Talk Developing...
  10. Scientist Networking: What is an Informational Interview?

    Type
    Blog Post
    Published
    July 1, 2014, 3:42 p.m.
    ...meet interesting people doing interesting things. I call this building relationships because networking has...or a particular position at their company, do NOT call this an Informational Interview. If you do this,... if it is not possible consider a phone or video call. If you do decide to use Skype, make sure to follow...
  11. Top 10 Open Science Developments of 2013

    Type
    Blog Post
    Published
    Dec. 19, 2013, 3:46 p.m.
    ...Science and Technology Policy issued a memorandum calling on Federal agencies with over $100 million in annual...promote open science, ensure good stewardship of clinical trial data, serve society and patients, and respect...patents in a case against Myriad, an organization called Free the Data launched a public database to gather...
  12. Seeing Red: Simple GFP Photoconversion

    Type
    Blog Post
    Published
    Aug. 4, 2015, 2:30 p.m.
    ...used a GFP derivative to conduct subcellular localization studies or make a reporter construct. Fluorescent... mammalian cells, and it may find wide use in biological research. Photoconvertible fluorescent proteins... new transgenic line could avoid problems in localization that have been encountered by some investigators...
  13. Easing the Protein Purification Process with pCri

    Type
    Blog Post
    Published
    June 19, 2015, 3:08 p.m.
    ...research, notably determining the subcellular localization and the number of disulfide bonds in your protein...protein expression in systems other than E. coli, specifically the bacterium Bacillus subtilis and the yeast...may improve expression of proteins that natively localize there. pCri is both versatile and easy to use,...
  14. Supporting Rare Disease Research with BeHeard 2017

    Type
    Blog Post
    Published
    July 20, 2017, 2:30 p.m.
    ...Institute partners with companies to provide technological resources for those studying rare disease. This...will use fluorescent proteins to monitor the localization of these genes, CRISPR to disrupt their function... University of British Columbia Department of Urological Sciences. Dr. Nabavi studies peritoneal mesothelioma...
  15. Working 9-5: an Addgene Co-op

    Type
    Blog Post
    Published
    June 2, 2022, 2:15 p.m.
    ...hour long interview. I anxiously prepared for the call. The length of this interview was intimidating to...team and shows how they fit into the system. Specifically as a co-op, it is encouraged to explore different... a 9-5 As it turned out, Addgene uses something called “core hours”. Core hours consist of the time between...
  16. Addgene is Expanding Our Viral Vector Service!

    Type
    Blog Post
    Published
    Oct. 15, 2024, 1:15 p.m.
    ...service. A small subset of AAV plasmids will have technical or legal restrictions that make them ineligible...be reviewed by Addgene for legal approvals and technical compatibility with our production process. This...found in our in-stock preps. If a request has technical considerations that may affect expected titers...
  17. What's New in CRISPR - March 2020

    Type
    Blog Post
    Published
    March 10, 2020, 1:15 p.m.
    ...plasmids available at Addgene. We will still periodically focus on specific CRISPR plasmid tools more ...and an optogenetic tool that controls nuclear localization (LINuS). Blue light renders the NLS accessible...expression of specific Caulobacter genes using a catalytically dead Cas9 (dCas9) derived from Streptococcus...
  18. SpyLigase Irreversibly Locks Peptides Together for Efficient Cell Capture

    Type
    Blog Post
    Published
    Aug. 13, 2014, 3:49 p.m.
    ...parts. Their efforts yielded a protein, which they call SpyLigase (Spy comes from the “S” in Streptococcus...able to grab on to proteins irreversibly in a genetically encoded way. SpyTag is nice and small, just 13...this tool? Howarth: Polyproteins are useful for mechanical study of proteins by atomic force microscopy ...
  19. The Michael Davidson Collection: One-Stop Shop for Fluorescent Proteins

    Type
    Blog Post
    Published
    July 29, 2014, 6:16 p.m.
    ...the collection without getting overwhelmed by its scale: Look at the mEmerald variants first, followed by...fluorescently tagged versions of many proteins known to localize to specific cellular structures.The Davidson lab...you’re not sure where your protein of interest localizes in the cell, use these markers as your guide. ...
  20. Addgene's a Nonprofit? Nonprofit Awareness Day 2017

    Type
    Blog Post
    Published
    June 5, 2017, 3:19 p.m.
    ...American Cancer Society, or maybe you think about a local food pantry or community arts organization. Many...services we provide like quality control, curation, technical service and open-access educational resources....decisions at Addgene If you’re ever curious what specifically drives the decision making process at Addgene...
  21. Chemogenetics vs. Optogenetics: Which Method Should I Choose?

    Type
    Blog Post
    Published
    June 11, 2020, 1:34 p.m.
    ...wavelength of light. This response is immediate, on the scale of milliseconds, and can precisely link a neuron's...control over timing. Because chemogenetics relies on chemical activation and the diffusion of drugs throughout...require a permanent intracranial implant to be surgically installed to allow for light delivery. Chemogenetics...
  22. Build Your CRISPR Vocabulary

    Type
    Blog Post
    Published
    July 2, 2024, 1:15 p.m.
    ...CRISPR array. The CRISPR array is composed of identical repeat sequences and variable spacer sequences...involve different proteins, but many of them are called Cas, short for “CRISPR-associated.” The most famous...integration into the array, these sequences are called protospacers. Repeats: Bacterial DNA that appears...
  23. Antibodies 101: Affinity Tags

    Type
    Blog Post
    Published
    Sept. 19, 2023, 1 p.m.
    ...you covered! His His tags, often called polyhistidine tags, typically include six consecutive His residues...(Fox and Waugh, 2002). The tag can also be proteolytically cleaved after purification, so as not to perturb...
  24. An Addgene Co-op: The Intersection of Fun, Friendship, and Work

    Type
    Blog Post
    Published
    June 29, 2023, 7 p.m.
    ...required to complete a six month work experience called a co-op to receive a degree. Northeastern compiles... occasional TikTok. I was also responsible for typical entry level tasks such as stuffing new depositor...connections with coworkers seem, in retrospect, nonsensical. I have found the people at Addgene have become...
  25. Embracing Serendipity: A Crucial Element in the PhD Journey

    Type
    Blog Post
    Published
    April 25, 2024, 1:15 p.m.
    ...let curiosity guide your intellectual journey. Practical approaches One approach to achieve this goal ...chemistry, even if your primary focus lies within a biological lab. Engaging in such seminars exposes you to...ourselves moments of release and mental freedom. Practical approaches Engaging in mindful meditation, taking...
  26. Bricking Science: Portraying Scientific Reality Through LEGO

    Type
    Blog Post
    Published
    Nov. 29, 2016, 3:30 p.m.
    ...sometimes no culprit can be found…. In our lab we call this mysterious source of failure the lab gnome....There must be some way to use LEGOs, which are practically universally loved (except for those rare times...children who have no preconceived obstacles, optimistically grasp at limitless potential, and who sometimes...
  27. Science Careers: Unruly Interests Feed Many Paths

    Type
    Blog Post
    Published
    Sept. 26, 2017, 12:12 p.m.
    ...with people, nurturing networks, as much as with technical knowledge. I leverage a breadth of knowledge to...I am constantly teaching – often explaining a technical piece of research to others outside that specialty...punctuation can be wildly funny as well as financially critical. Those who work on the publishing side of science...
  28. What Do I Do Now? Academic v. Non-Academic Career Decisions

    Type
    Blog Post
    Published
    March 9, 2017, 3:40 p.m.
    ...the less acknowledged perks of scientific and technical training is that these educational paths prepare...Foundation study showed that 57% of PhDs in US Biomedical workforce will NOT go into “traditional” academic...but there is more flexibility with the academic calendar Academic researchers must be extreme self-starters...
  29. Identifying Sequence Elements with SnapGene's Feature Database

    Type
    Blog Post
    Published
    Dec. 21, 2017, 2:06 p.m.
    ... While there were software tools available to biomedical researchers manipulating DNA sequences on a daily...different microbial strains. It proved to be impractical to catalog every variant of a feature. Instead...that tolerates occasional mismatches or indels. Empirical tests indicated that a reasonable rule is to require...
  30. A Tour of Addgene's Most Popular Pooled Libraries

    Type
    Blog Post
    Published
    Nov. 19, 2025, 2:15 p.m.
    ... at the same time. Barcoding libraries Just as physical barcodes help librarians track individual books...Doench labs deposited new and improved libraries called Julianna, for mouse screening, and Jacquere, for...several coronavirus libraries have been used to systematically explore variations in the spike protein, teaching...
  31. Hot Plasmids and Viral Preps - September 2021

    Type
    Blog Post
    Published
    Sept. 21, 2021, 1:15 p.m.
    ...system by using a stronger promoter and different biochemical secondary energy sources to increase protein ...DNA of interest, and cell extract.    Graphical Abstract: Schematic representation of cell-free...sgRNA pool can also target core operons in other pneumococcal strains. The BARBEKO sgRNA library uses CRISPR...
  32. Pushing the Limits of DNA Assembly

    Type
    Blog Post
    Published
    Sept. 6, 2017, 1:01 p.m.
    ... to a method of physically joining multiple fragments of DNA to create a synthetically designed DNA sequence...one single-stranded oligo, instead of the more typical two oligos, is more cost effective and eliminates...
  33. Fluorescent Protein Travel Awards - FLiPs and Fluorescent Protein Biosensors

    Type
    Blog Post
    Published
    July 27, 2017, 1:11 p.m.
    ...it’s now easy to monitor protein expression, localization, and protein-protein interactions. Beyond these...known to bind to the HMO of interest. Fatima specifically proposes using this sensor to detect HMOs found...Fatima's recent publication on her HMO work in Cell Chemical Biology! Additional Resources on the Addgene ...
  34. Addgene Depositors Get More Citations

    Type
    Blog Post
    Published
    April 20, 2017, 2:30 p.m.
    ...Microbiology, Biochemistry & Molecular Biology, and Biochemical Research Methods. We also pulled the big interdisciplinary...the papers with plasmids deposited at Addgene – typically about four times as many as papers without plasmids... of publication. Table 1 provides an example calculation of the weights. Table 1: Journal Weighting Example...
  35. The Importance of High Titer for AAV Transductions

    Type
    Blog Post
    Published
    March 1, 2018, 2:11 p.m.
    ...particle to infect a cell, it has to come into physical contact with that cell. Since there is a limited... by an anterograde AAV was shown to drop off drastically with lower titers. As you can see in figure 2...AAV-mediated gene expression in a target cell. Practical considerations If you have high quality AAV, you...
  36. What Good Citizenship Can Do for Reproducibility in Science

    Type
    Blog Post
    Published
    Nov. 7, 2019, 2:18 p.m.
    ...for actually making it happen would increase dramatically. I’m not sure what the best approach to doing...at The Scripps Research Institute in La Jolla, California. She joined Elsevier after her postdoctoral studies...primary research and review journals across life and physical science, and editorial contribution to the strategic...
  37. Virtual Science Conference Coming Up? Three Addgenies Share Their Experience

    Type
    Blog Post
    Published
    June 30, 2020, 1:15 p.m.
    ...virtual conferences may have apps or interactive calendars that you can use to help plan your conference ...one session to another,” Bachle says. “Now, the physical location didn’t matter. I didn’t have to consider...conference is over on the website or in the app. Technical difficulties? Attending a conference virtually...
  38. Trading Spaces - Visiting Scientist Edition

    Type
    Blog Post
    Published
    Aug. 22, 2023, 1 p.m.
    ...the host university does not hire or pay them (typically). A visiting scientist is distinct from equipment...the scientist to the new institute where their typical workdays will be carried out until the end of the...one) to communicate your plan as well. Making logistical and funding arrangements Visiting scientist positions...
  39. Multiplexed Overexpression of Regulatory Factors (MORF) collection

    Type
    Blog Post
    Published
    March 30, 2023, 1:15 p.m.
    ... and 15/17 morphologically aligned. Documentation of the network that initiates biological reprogramming...10.1016/j.cell.2022.11.026 Joung J. et al., Genome-scale CRISPR Cas-9 knockout and transcriptional activation...
Showing: 561 - 600 of 858 results