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Showing: 341 - 360 of 778 results
  1. New Acoustic Reporter Genes: Ultrasound Imaging of Gene Expression

    Type
    Blog Post
    Published
    Jan. 24, 2023, 2:15 p.m.
    ...as well as high spatial and temporal resolution, making it ideal for visualizing gene expression in vivo...ultrasound contrast. We (the authors) are currently working on improving and optimizing ARGs, with Marjorie...They also did not scatter ultrasound nonlinearly, making them difficult to distinguish from background tissue...intraperitoneal doxycycline injections to enable their tracking with ultrasound imaging (Fig. 2d). Creating a ...
  2. Bioinformatics at Addgene

    Type
    Blog Post
    Published
    July 14, 2022, 1:15 p.m.
    ...process was working as expected, we moved forward with creating the next process and linking the output...needs of the user. Thus, a key criteria we were looking for was the ability to re-use or borrow existing... end of the script or by opening the files. By working on one process at a time, and testing a small set...
  3. Replacing Paper: Tips for Choosing an Electronic lab Notebook

    Type
    Blog Post
    Published
    July 10, 2018, 1:08 p.m.
    ...situation differently, some adopting simple note-taking tools, others using excel sheets or organizing ... on the market today, ranging from general note taking tools, to more scientific field-based solutions...of use of the software. We identified that when talking about ELN costs and limited budgets, “a large percentage...ELN will support that. In addition, if you are working for a large institution or company, site licenses...
  4. Antibodies 101: Introduction to Immunofluorescence

    Type
    Blog Post
    Published
    Nov. 16, 2021, 2:15 p.m.
    ...experiment. What is immunofluorescence? Generally speaking, IF is an application in which antibodies that... different approaches to be familiar with when talking about IF, direct and indirect. For direct IF, researchers...different colors. Multiplex immunofluorescence Speaking of different colors, having a palette of secondary...permeabilization, antigen retrieval, and sectioning. Blocking Block is used to reduce non-specific binding...
  5. Five Popular Model Organisms, Part 2

    Type
    Blog Post
    Published
    Sept. 29, 2020, 1:15 p.m.
    ...Iannaccone et al., 2009). Rats are larger than mice making them more useful for certain studies that involve...genetics and developmental patterns are conserved, making them great models for human disease research. One...eggs are large, opaque, and produced in abundance, making them useful for in vivo studies. These attributes...flowers. Image from BlueRidgeKitties. If you are working with Arabidopsis check out the GreenGate Toolkit...
  6. Four Ways to Package Transgenes That Exceed the Size Limit of Adeno-associated Virus

    Type
    Blog Post
    Published
    Sept. 1, 2020, 1:15 p.m.
    ...fit a big gene into a tiny vector like AAV? By breaking the transgene into smaller pieces. Reassembly ...following transduction.  So what’s going on here? The working model is that the oversized AAV genomes are fragmented...Surveillance Mechanism That Eliminates Transcripts Lacking Termination Codons. Science 295:2258–2261 . https... Hirsch ML, Li C, Bellon I, Yin C, Chavala S, Pryadkina M, Richard I, Samulski RJ (2013) Oversized AAV...
  7. Evolution of Brainbow: Using Cre-lox for Multicolor Labeling of Neurons

    Type
    Blog Post
    Published
    April 24, 2015, 2:39 p.m.
    ...Brainbow labeling has also been applied to cell marking and lineage tracing in other systems, such as zebrafish...directly trafficked to cell membranes. Membrane trafficking of farnesylated derivatives enables labeling ...fluorescence due to the addition of translation-blocking STOP cassette immediately following the promoter...dev.094631. PubMed. Multiplex cell and lineage tracking with combinatorial labels. Loulier K, Barry R,...
  8. Viral Vectors 101: Systemic Capsids

    Type
    Blog Post
    Published
    Oct. 12, 2023, 1:15 p.m.
    ...this post, we didn’t come across a broadly used working definition of systemic capsids. After some consideration...Beadle, K., Jang, M.J., Kim, H.M., Rajendran, P.S., Tompkins, J.D., Shivkumar, K., Deverman, B.E., Gradinaru...Chen, X., Wolfe, D. A., Bindu, D. S., Zhang, M., Taskin, N., Goertsen, D., Shay, T. F., Sullivan, E. E.... I. G., Pacouret, S., Chen, A. T., Chan, Y. A., Ryvkin, D., Gu, C., & Deverman, B. E. (2022). A high-efficiency...C., Lagerborg, K. A., Tellez, L., Krunnfusz, A., King, E. M., Ye, S., Solomon, I. H., Tabebordbar, M.,... Tabebordbar, M., Lagerborg, K. A., Stanton, A., King, E. M., Ye, S., Tellez, L., Krunnfusz, A., Tavakoli...
  9. CRISPR 101: Off-Target Effects

    Type
    Blog Post
    Published
    Feb. 8, 2024, 2:15 p.m.
    ...scenarios below for a CRISPR experiment which involves making specific knock-out edits in a gene(s) of interest...off-target frequency of 5%. Your experiment involves making a large sgRNA library to thousands of genes and...certain Cas enzymes are less compatible with the bulkiness that accompanies mispairing of bases. To reduce...enzyme swaps will only reduce off targets where nicking/cleaving of DNA occurs, not for deadCas activator...
  10. Viral Vectors 101: Optogenetic Tools

    Type
    Blog Post
    Published
    June 27, 2023, 1:15 p.m.
    ... channel with fast kinetics may be required, whereas a channel with slower kinetics can be used for lower...each light source used.   Channel and activation kinetics Some channels turn on and off very rapidly in ...thorough characterization data, like spectral and kinetic activation information, in the supplemental data...
  11. Antibodies 101: Multiplex Immunofluorescence

    Type
    Blog Post
    Published
    May 23, 2023, 1:15 p.m.
    ...counting the number of puncta in each cell. When making figures for a paper or presentation, make sure ...binding non-specifically – try optimizing your blocking and washing conditions or consider using a different...concentrations of all the different antibodies, blocking, washing, and sample preparation steps, in order...Immunofluorescence Staining. In W. H. Yong (Ed.), Biobanking (Vol. 1897, pp. 299–311). Springer New York. ...
  12. Deep Dive: Statistical Tests (Comparisons)

    Type
    Blog Post
    Published
    March 7, 2023, 2:15 p.m.
    ... single dependent variable. I know what you’re thinking – this really sounds like a two-way ANOVA. And...calculated p values from smallest to largest and ranking them (1 being the smallest value). It calculates... you want to know type of distribution you are working with, graphing data with a histogram is sometimes... friendly neighborhood biostatistician happy by making your statistical analysis plan when you design ...
  13. Introducing the Addgene Antibodies 101 eBook!

    Type
    Blog Post
    Published
    Oct. 29, 2024, 1:15 p.m.
    ...eBook collection is a handy resource for anyone looking to use antibody-based applications in their research...: What is an Antibody” quite useful. If you’re looking to design your first flow cytometry experiment,...the Antibody 101 eBook is a great place to start looking for answers.    We hope you find the latest addition...
  14. Special Delivery: Fluorophore Targeting for FRET Studies

    Type
    Blog Post
    Published
    July 19, 2016, 2:30 p.m.
    ...Miyawaki, Griesbeck, Heim, & Tsien, 1999), monitoring kinase activity (Ni, Titov, & Zhang, 2006), quantifying...pressure-test your FRET assay to make sure it is working? This article addresses these questions, which ...s best to consider these cases separately when talking about the tools that are available. Let’s consider...Denis V. Titov, and Jin Zhang. "Analyzing protein kinase dynamics in living cells with FRET reporters." ...
  15. New FLIS Plasmid (April Fools 2022)

    Type
    Blog Post
    Published
    April 1, 2022, 1:15 p.m.
    ...Fly-related Issues in the Lab A significant drawback of working with fruit flies is their ability to escape their...experienced the minor yet consistent annoyance of walking into a fly lab and finding ourselves accosted by...system in a video filmed at Addgene:     If you're working in fly research, I hope you find this new technology...
  16. Addgene at SfN23!

    Type
    Blog Post
    Published
    Nov. 9, 2023, 2:15 p.m.
    ...viral vector specialist, Rebecca. They will be working with Andrew, the head of our scientific support...Specifically, Jo, Brook, and Angela are co-leading "Making a Greater Impact Using Clear and Accessible Scientific..., Instagram, and Bluesky.   Finally, if you're looking to brush up on your conference skills, check out...
  17. CRISPR 101: Cytosine Transversion Editors

    Type
    Blog Post
    Published
    March 25, 2025, 1:15 p.m.
    ...chemically modify target bases without breaking the DNA backbone, making them efficient and precise tools for... So how have scientists solved this problem? By taking advantage of repair pathways within the cell — ...mammalian cells Researchers in the Xueli Zhang lab were making similar observations around the same time. (The...
  18. A Needle in a Base-Stack: Cas9 Structural Biology

    Type
    Blog Post
    Published
    June 4, 2024, 1:15 p.m.
    ...   Unbound Cas9 Now that we know what we’re looking at, let’s peek at unbound—“apo”—Cas9 from Streptococcus... the absence of guide RNA, preventing Cas9 from making off-target cuts.   Pro tip! X-ray crystallography...region between the two (Jiang & Doudna, 2017). By linking the two nuclease domains, Cas9 ensures both are...biology can help you visualize the system you’re working with and better understand how to manipulate it...
  19. 5 Science Rap Videos & Their Creator: Tom McFadden

    Type
    Blog Post
    Published
    Feb. 9, 2017, 3:30 p.m.
    ...If you’re new to plasmids, we highly recommend checking out the video). Tom has made many more Science...sciencewithtom.com. Many thanks to Tom McFadden for taking the time to sit down and talk with us. Tom McFadden...McFadden is a YouTuber and science educator looking for creative ways to implement the next generation science...
Showing: 341 - 360 of 778 results