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We narrowed to 858 results for: CAL

Showing: 421 - 440 of 858 results
  1. Hot Plasmids May 2018 - Optogenetics, Decaffeination, Biosensors, and Fluorescent Protein Tools

    Type
    Blog Post
    Published
    May 15, 2018, 12:43 p.m.
    ...expression observed with wild type CoChR, soCoChR localizes primarily to the cell body with very little signal...engineered microbes, used coffee grounds could be economically repurposed as starting material for the bioproduction... FLINC biosensors for live-cell imaging of biochemical activity Article contributed by Angela Holmes... live-cell imaging of the dynamic changes in biochemical activity within the cell. Their Fluorescence ...peak of 519 nm. These proteins have improved photophysical properties and can be used in quenching, FRET...
  2. Plasmids 101: FLEx Vectors

    Type
    Blog Post
    Published
    April 28, 2016, 2:30 p.m.
    ...using either loxP or lox511 sites, leaving two identical sites on one end of the DNA fragment (Figure 1...recombination event then excises the DNA between the identical loxP or lox511 sites (Figure 1, bottom). Since...presence of Cre recombinase. This plasmid now specifically drives expression of mCherry instead of BFP.... rescue with in the antisense orientation (let’s call the gene “GeneR”). The key to this experiment is...information. References: 1. Schnütgen F, Doerflinger N, Calléja C, Wendling O, Chambon P, and Ghyselinck NB. A ...
  3. Gaining Leadership Skills Volunteering at a Professional Organization

    Type
    Blog Post
    Published
    Aug. 6, 2015, 2:30 p.m.
    ...workplace, and pursue leadership opportunities at the local, institutional, regional, and national levels. These... first at Brigham and Women’s Hospital/Harvard Medical School and then Boston University (institutions...issues faced by postdocs and institutions are not local but are national issues. I applied and was successfully...other people mostly online and on monthly phone calls. This has its challenges as meeting in person is...Chair then stepped down, I became interim Chair automatically as it was an understood expectation of any Vice-Chair...
  4. Experimenting in an Open Source lab: from CRISPR to Cats

    Type
    Blog Post
    Published
    July 23, 2015, 2:30 p.m.
    ...and solutions to research problems. This movement calls itself the Open Science movement and is part of ...and the reagents are too expensive to make it practical - but we have members looking at how to re-use...don’t throw old equipment away until you ask your local makerspace if they want to hack new life into it...somewhere near you. The place to start looking for your local space is the Hackerspace website. Markerspaces differ...fun with technology, so feel free to contact your local space and get involved! Derek Jacoby is a PhD ...
  5. How-to: 5 Steps to a Great Panel Discussion

    Type
    Blog Post
    Published
    Oct. 22, 2014, 1:57 p.m.
    ...different questions than those on the prep calls, but often the prep calls provide good ideas for interesting ...possibly with an organizer) should set up a 30 minute call with each panelist to get to know their style and...better at remembering these things on a relaxed phone call than when first confronted on a stage in front of...long introductions. The moderator asks questions, calling on 1-2 panelist for each question in a way that...
  6. Antibodies 101: Flow Compensation

    Type
    Blog Post
    Published
    May 16, 2024, 1:15 p.m.
    ...BV510 and AmCyan have almost identical emission spectra but may be called BV510 on one cytometer and AmCyan...for one another. This overlap in spectra is often called "spillover." For example, if your flow cytometer...shift towards the X axis to become a perpendicular vertical line.     In general, most spillover between samples...research technician in Arlene Sharpe's lab at Harvard Medical School.   More resources on the Addgene blog Introduction...
  7. Plasmids 101: Degron Tags

    Type
    Blog Post
    Published
    March 14, 2024, 1:15 p.m.
    ...protein must be expressed (inducibly, ectopically, stably… it’s your call). The TIR1 F-box protein will associate...their fused protein under certain conditions (typically the addition of an exogenous small molecule). ...in size from several kDa up to ~35 kDa and are typically knocked-in via gene targeting or cloned in-frame...protein structures, interacting partners, and localization. Thankfully, this is a hot topic with many resources...
  8. PhD Applications After COVID

    Type
    Blog Post
    Published
    Jan. 5, 2023, 2:15 p.m.
    ...the right fit for you without the financial and logistical stress that accompanies traveling for campus ...Visits After receiving applications, universities typically invite a select group of students to continue ...and each other. Before COVID-19, financial and logistical obstacles could make touring potential programs...in-person interviews for a variety of reasons (logistical, financial, etc…) now have options to fully engage...format of interview from a travel day to an online call in response to challenges on their end. Though the...
  9. Hot Plasmids and Viral Preps - May 2021

    Type
    Blog Post
    Published
    May 18, 2021, 1:15 p.m.
    ...Preger et al., 2020. Preger et al., Journal of Biological Chemistry 2020. https://doi.org/10.1074/jbc.RA120.01289...research, which required protein compartments to co-localize multiple enzymes in a reaction pathway, the MPyV...expression selectively in Parvalbumin containing cortical interneurons. We now provide ready-to-use AAV ...vectors expressing GCaMP6f with this promoter. Image calcium transients in PV interneurons with AAV-S5E2-GCaMP6f...terminal providing better signal to noise for imaging calcium dynamics in fine structures. We have expanded our...
  10. Adenoviral Delivery of CRISPR/Cas9 Aims to Expand Genome Editing to Primary Cells

    Type
    Blog Post
    Published
    Dec. 10, 2020, 1 p.m.
    ...introducing the delivery method in 2014, Manuel Goncalves lab report that AdV-mediated transduction of gRNA...Gonçalves and his colleagues at Leiden University Medical Center are now available at Addgene along with ...and very efficient introduction of DNA into therapeutically relevant, non-transformed mammalian cells. ...and used AdV vectors to edit genes in several biological systems. It has been used for instance in inherited...Viral vectors for gene therapy: Current state and clinical perspectives. Biochemistry Moscow 81:700–708 ....
  11. Golden Gate Assembly Upgrades: More Fragments, Faster Assembly, and Higher Fidelity

    Type
    Blog Post
    Published
    Oct. 11, 2018, 12:30 p.m.
    ... more than 10 modules often rely on two-step hierarchical approaches using different Type IIS restriction...stability, and buffer compatibility have placed practical limits on single- or two-step assemblies. We have... While T4 DNA Ligase, the mainstay of most biotechnological cloning efforts for over 50 years, prefers... plate Fidelity of assembly (percent correct) Calculated colony totals Per 2 μl assembly reaction Per...outgrowth volumes described in Figure 3, with calculated yields from entire outgrowth built from 2 µl ...
  12. Cloning Mammalian Cells with the Agarose Method

    Type
    Blog Post
    Published
    Sept. 7, 2017, 12:17 p.m.
    ... molecular biology-grade agarose containing physiological concentrations of salts and glucose. If we circled...fluorescent protein), fluorescence microscopy can theoretically be used to select specific wells from the 48... terms of growth rates, morphology or other physiological properties. An advantage of this technique is...properties, either initially, or using secondary biological screens. For example, for cancer researchers,...Neurobiology and Anatomy at the University of Maryland Medical School in Baltimore. She is particularly interested...
  13. Plasmids 101: Optimizing Plasmid Yields

    Type
    Blog Post
    Published
    May 26, 2016, 2:30 p.m.
    ...in-house protocol. DNA yields for this procedure are typically in excess of 100 ng/ul, more than enough DNA to...be viewed more as a guideline, since they are typically based on the copy number of the empty plasmid ...improved plasmid DNA yield. Culture conditions play a critical role in plasmid DNA yield. Different plasmids ...are generally, but not perfectly, correlated. Typical growth times for high copy plasmids in standard...miniprepping at various time points. Measuring the optical density of the culture can indicate the number ...
  14. Summer SciComm Series: Modes of Communication

    Type
    Blog Post
    Published
    July 1, 2022, 1:15 p.m.
    ...Ample distribution channels both digitally and physically. Easy to incorporate visuals if needed. Traditional...means of scicomm. Digital or print distribution.  Typically limited to a single page of information. Primarily...levels and interaction. Can bring in things to be physically interacted with. Public speaking is a common ...internet access. High probability of real-time technical difficulties Exhibits Medium to high Audience...exhibit). No remote access; limited occupancy. Typically needs to be staffed. Mixed Media Medium to...
  15. Introducing Addgene's New Search - Find Plasmids More Easily For Your Research!

    Type
    Blog Post
    Published
    Dec. 3, 2019, 11:38 a.m.
    ... and ways to navigate it, we’ll search for the calcium biosensor, GCaMP, and click through to the plasmid...distribution. If your experiment involves delivering a calcium biosensor using AAV, you might decide you’d really...? The available filtering options now change dynamically based on the type of material and specific search..., followed by a convenient table of plasmids specifically designed for this purpose: Still stumped? Ask...results at all, let us know! Contact our scientific technical support at [email protected] and let us help.  ...
  16. SciComm: Taking Science to Elementary and Middle Schools

    Type
    Blog Post
    Published
    July 9, 2019, 12:52 p.m.
    ... science teachers at our school put out the call to local parents who would feel comfortable speaking ...parents who can answer some of the surprisingly technical questions elementary students can ask. It doesn... dangers of people using the technology in an unethical manner, but I also tried not to be an alarmist...fields in biology, are moving so quickly that it’s basically impossible for textbooks to keep up. Even the ...
  17. Plasmids 101: Secondary Nanobody Toolbox

    Type
    Blog Post
    Published
    Feb. 27, 2018, 2:04 p.m.
    ... of these techniques have in common? They all typically require secondary antibodies, frequently of the...are derived from an unusual type of IgG antibody called a heavy chain antibody (HCab), which are unique...different species, nanobodies are useful for colocalization labeling of up to 3 targets (Pleiner et al ...desired fluorophores. In figure 4B below, triple colocalization is possible even when staining cells with three...multi-color staining workflow yields similar localization patterns as cells stained for one target (compare...
  18. A Career in Grants: How To Become a Grant Professional

    Type
    Blog Post
    Published
    Aug. 20, 2015, 2:30 p.m.
    ...especially in the sciences and by extension to scientifically oriented nonprofits. Like Deb, I worked for...available through not-for-profits, universities, local and national government offices, schools, healthcare... arts? Do you find satisfaction in helping your local food shelf raise money? Do you have experience with... as a grant writer and/or grant reviewer with a local nonprofit that aligns with your passion to get grant...Join the Grant Professionals Association (GPA)  local GPA Chapters, and the National Grants Management...
  19. "Hall of Fame" AAV Enhancers from the Allen Institute for Brain Science

    Type
    Blog Post
    Published
    Sept. 9, 2025, 1:15 p.m.
    ...administered systemically (retro-orbitally, RO; or intracerebroventricularly, ICV) or locally (stereotaxically...developed, funded, and shared has no doubt changed drastically over the past few decades. But no matter how ...and transgenic mouse lines for genetic access to cortical cell types. Cell. https://doi.org/10.1016/j.cell...
  20. Harnessing TnpB for Genome Editing: A Compact and Versatile Tool for Your Research

    Type
    Blog Post
    Published
    July 29, 2025, 1:15 p.m.
    ... an exciting class of compact genome editors, typically only around 400 amino acids in size. To give a...target DNA, TnpBs also need a short sequence motif called a TAM (transposon-associated motif), which is positioned...familiar targeting mechanism. Small RNA elements called right-end RNA (reRNA) or omega RNA (ωRNA) guide... a single experiment (Karmakar et al., 2024). Practical Guide: Using pK-TnpB1 and pK-TnpB2 Vectors The...The process for cloning the 20-nt guide RNA is identical for both vectors. Here, we provide a step-by-step...
Showing: 421 - 440 of 858 results