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We narrowed to 621 results for: cat.1

Showing: 21 - 30 of 621 results
  1. OCaMP: A New Calcium Indicator for Neural Imaging

    Type
    Blog Post
    Published
    Aug. 19, 2025, 1:15 p.m.
    ... developed calcium indicators spanning nearly the entire visible spectrum (Figure 1). The GCaMP series...available in your microscope setup. Figure 1: Excitation (dotted) and emission (solid) spectra ...potential (AP) spiking events are indicated below the trace; asterisk indicates a single AP. B) Averaged fluorescence...past few decades, genetically encoded calcium indicators (GECIs) have become a vital tool in neuroscience...toolbox, our team recently developed a new calcium indicator, OCaMP. The challenge: Expanding the fluorescent... signals in the brain. For this to work, each indicator needs to emit a different color of light and be...gold standard for green fluorescence, while red indicators jRGECO1a and jRCaMP1a are widely used as well...
  2. Transferable Skills Guide: Cross-team Communication

    Type
    Blog Post
    Published
    Nov. 21, 2019, 1:53 p.m.
    ...Addgene, we use seven different types of “plates” (Fig. 1). When you have to tell an engineer that you want ...”? We took steps towards solving this problem by 1) making sure we qualified these words when we discussed.... I needed to a) figure out the sources of miscommunication and b) find practical solutions.  My PhD ... for this task. Good scientists learn how to communicate their work differently based on their audience... family is going to vary widely. The way you communicate your science at a poster is going to vary depending...two main problems with Addgene’s cross team communication. Although these real world examples did not ... for the container to be used in cross-team communication A list of “AKA” names, or jargon terms, for ...
  3. Great Results Start with Great Standard Curves

    Type
    Blog Post
    Published
    Aug. 15, 2024, 1:15 p.m.
    ...    Figure 1: A 1 mg/mL control is diluted in a series ranging from 1:2 to 1:32. Each individual...trendline. R2 ranges from 0 to 1 with 1 being a perfect fit and 0 indicating that there is no linear relationship...example, Figure 1 depicts a 2-fold dilution series. Each step of the series dilutes by 1:2 for a series...series that ranges from 1:2–1:32. The specific dilution series used will depend on the expected concentration...individual step of the series is consistent at 1:2. When preparing a dilution series, use a new pipette tip for... be run in duplicate or triplicate. The closeness of the data points generated by replicate values provides... the standard dilution series in duplicate or triplicate. Replicates allows you to calculate the curve...
  4. Plasmids 101: Common Lab E. coli Strains

    Type
    Blog Post
    Published
    Nov. 7, 2014, 2:56 p.m.
    ...Table 1 below outlines a few of the more common genetic changes found in E. coli strains. Table 1: Common...pooled library amplification. F' mcrA Δ(mcrBC-hsdRMS-mrr) recA1 endA1 gyrA96 gal-thi-1 supE44 λ-relA1 ...amber (UAG) stop codon by tyrosine insertion λ-thi-1 or thi1 Mutation in thiamine metabolism Requires exogenous... all based on E. coli K-12 and are considered BSL-1. Table 2: Lab strains of E. coli Strain Natural...plasmids, blue/white screening. F- endA1 glnV44 thi-1 recA1 relA1 gyrA96 deoR nupG Φ80dlacZΔM15 Δ(lacZYA-argF...) recA13 leuB6 ara-14 proA2 lacY1 galK2 xyl-5 mtl-1 rpsL20(SmR) glnV44 λ- JM109   General cloning and...strain for cloning repetitive DNA. endA1 glnV44 thi-1 relA1 gyrA96 recA1 mcrB+ Δ(lac-proAB) e14- [F' traD36...
  5. Tips for a 1st Time CRISPR User (by a 1st Time CRISPR User)

    Type
    Blog Post
    Published
    March 7, 2017, 3:30 p.m.
    ...of 0.3, as recommended by the original publication. Pro-Tip: 1. Use multiple gRNAs to target different..., as indicated by the presence of a 428 bp digestion product (lane 2). The undigested (-, lane 1) DNA ...The entire process from start to finish took about 1 month. Cas9 delivery Overview: Before any editing...lentiviral vector, lentiCas9-Blast (52962-LV, Figure 1). Some cells were then used to generate a monoclonal...rest of the cells were frozen down. Figure 1: Cas9 expression in A549 cells transduced with lentiCas9...Western blotting is a loading control. Pro-Tips: 1. It’s all about the MOI. In retrospect I used a way... pool had wildly variable Cas9 expression (Figure 1). This is a problem because Cas9 expression affects...
  6. Viral Vectors 101: AAV Variables That Matter

    Type
    Blog Post
    Published
    June 1, 2023, 1:15 p.m.
    ...promoters. Gene Therapy, 28(1–2), 56–74. https://doi.org/10.1038/s41434-020-0169-1 Oh, J. Y., Han, J. H., ...AAV Serotypes and Their Applications in Gene Therapy: An Overview. Cells, 12(5), 1–41. https://doi.org/10.3390...constitutive promoters located in adeno-associated viral vectors. PLoS ONE, 9(8), 1–10. https://doi.org/...the selection process. Factors to think about are (1) your experimental conditions and measurements; (2...serotype, promoter, and titer.     Figure 1: Flow chart depicting a) steps for selecting serotypes...injection site than AAV2 (Watakabe et al., 2015) (Figure 1). You’ll need to consider if such properties could...
  7. CRISPR Between the Genes: How to Experiment with Enhancers and Epigenomics

    Type
    Blog Post
    Published
    Aug. 9, 2016, 2:30 p.m.
    ...chromosome, start, and stop. For instance (chr3, 1, 10) indicates a stretch of DNA at the very beginning of .... Table 1: An emerging family of "GPS for the genome" techniques Technique What It Locates ChIP-seq...clinical applications of CRISPR in the next section. In order to denote the NANOG enhancers from step 1 with...genetic elements like protein, RNA, and DNA (Table 1). As with GPS in the real world, coordinates alone...enhancers with the help of genome math. Figure 1: Genome math illustrated. Intersect (left) and set...histones with “GPS for proteins,” ChIP-seq from Table 1. Because of DNA’s 3D geometry and the chemical properties...experiment to identify the critical NANOG binding sites: 1. Find Enhancers that have NANOG binding sites 2. Design...
  8. Troubleshooting and Optimizing a Western Blot

    Type
    Blog Post
    Published
    Sept. 17, 2024, 1:15 p.m.
    ...the antibody’s dynamic range. Specifically, the 1:2, 1:1, and No dilution samples all have approximately... doing the purification and cross-adsorption in lab, consider a dilution range from 1:100–1:1,000. If ...recommended dilution and/or range (typically between 1:500 and 1:10,000 for primary antibodies). You’ll want to...from ascites fluid, try a dilution range from 1:1,000–1:100,000. Secondary antibodies For secondary antibodies...recommended dilution range is usually between 1:5,000 and 1:200,000. Check the manufacturer’s recommendations...antibodies that are not.   Table 1: Troubleshooting a western blot *indicates a diagnostic-only step Issue...reagent (usually an antibody).      Figure 1: A protein gradient. The density of the bands, which...
  9. Lambda Red: A Homologous Recombination-based Technique for Genetic Engineering

    Type
    Blog Post
    Published
    Dec. 15, 2016, 3:57 p.m.
    ...recombineering system has three components (Figure 1): 1) Exo, 2) Beta, and 3) Gam. All three are required...that occur during DNA replication. There are two ways to avoid activating MMR: 1) use a strain of bacteria...Table 1: Overview of ds- and ss-DNA Uses in Recombineering Substrate Best Suited Application Recombination... interested in science communication and in vitro diagnostics.     References 1. Costantino N, Court DL...from the 5’ end and generate 2 possible products: 1) a partially dsDNA duplex with single-stranded 3’ ...recombineering with an ssDNA oligo substrate.   Figure 1: Components of the Lambda Red Recombineering system...and tags.  The typical frequency of recombinants is 1 positive clone out of 104 to 105 colonies. Pro Tip...
  10. Viral Vectors 101: Voltage Indicators

    Type
    Blog Post
    Published
    Jan. 30, 2024, 2:15 p.m.
    ...depths (1 mm), important for certain applications such as in vivo tissue imaging.   Figure 1: Ace-mScarlet...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...
Showing: 21 - 30 of 621 results