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Showing: 121 - 140 of 1081 results
  1. Antibodies 101: Flow Cytometry

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    Blog Post
    ...expression, measured using antibody conjugated fluorophores Fluorescent antibodies get around the challenges...staining a primary antibody binds to a target and a fluorochrome-conjugated secondary antibody binds to the ...are low as multiple secondary antibodies can bind to a primary antibody thus amplifying the signal.   ...should also include a secondary antibody control in which the primary antibody has been omitted from the staining... about antibodies Resources on Addgene.org Visit the Fluorescent Protein Guide Find antibody plasmids...Have you ever wanted to measure expression of your protein of interest in a single cell? Or perhaps, ...surface receptor are stained with a fluorescent antibody against the receptor and analyzed on a flow cytometer...
  2. The AAVantages of AAV in CRISPR Screens

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    Blog Post
    ...library to a significant degree using different types of AAV. Expression Another advantage of AAV vectors...ones. In those cases, AAV vector screens may be AAVantageous!       In vivo, in vitro, ex vivo CRISPR screens...cells with the CRISPR library in vitro before transplanting them into mice. For in vivo screens, mice are...locations that could cause deleterious effects. It is important to note, however, that while AAV rarely integrates...the amount of cloning, another option is to use variants of Cas9, like split Cas9, or a smaller Cas9 ortholog...Laboratory). https://doi.org/10.1101/2023.06.13.544831 Santinha, A. J., Klingler, E., Kuhn, M., Farouni, R., Lagler...
  3. New Antibodies in the Lab Animation!

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    Blog Post
    ...animation is here to help! "Antibodies 101: Antibodies in the Lab" shows how antibodies are used to study proteins... Addgene Addgene's Antibody Guide What is an Antibody? animation Addgene's Antibody 101 eBook    ...Thinking about using antibody-based applications in your experiment...but not sure where to start or ...introduction to — or quick refresher on — these common antibody applications.  Thanks for watching, and we hope...
  4. The Addgene Antibody Data Hub

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    Blog Post
    ...which antibody to request for your experiment!  Addgene’s Antibody Data Hub Addgene’s Antibody Data Hub...Updated AAV Data Hub Antibodies 101: Validation Antibodies 101: Selecting the Right Antibody...the Addgene antibody collection can look at user-deposited data detailing how an antibody performed in...Figure 2: Search options in the Antibody Data Hub. Data reports  Each antibody submission is used to create...immunocytochemistry experiment performed with the anti-Lhx6.1 antibody.    For a more detailed understanding of... the antibody performed.  Figure 5: Results for the data report shown in Figure 3. The antibody is rated...requesting an Addgene antibody, the Data Hub can help you decide if an antibody is a good candidate for...
  5. Antibody Validation for Flow Cytometry

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    Blog Post
    ...reagents, such as recombinant or hybridoma-derived monoclonal antibodies. It is also important to seek out ...Synaptotagmin-1 antibodies and corresponding Multi-rAb CoraLite® Plus 647 secondary antibodies. Antibody staining...0.35 µg/mL (1/100). * = monoclonal antibody, ** = recombinant antibody. Figure adapted from Biddle et al...multiple antibody clones targeting the same protein (independent antibodies). If two antibodies, that recognize...Good Antibodies, with significant input from Michael Biddle, PhD, also from Only Good Antibodies. The ...2023). Scaling of an antibody validation procedure enables quantification of antibody performance in major...Antibody validation is to confirm (or refute) that the antibody is selectively detecting the target-of-interest...
  6. Antibodies 101: Fab Fragments

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    Blog Post
    ...regions of the antibody that actually bind antigens.      Figure 1: IgG antibody structure with...portion of the antibody. Fab fragments are useful when you just need an antibody’s antigen binding function...   Why Fabs?  Antibody fragments have a handful of advantages over full antibodies. Their smaller size...as primary antibodies, you can make your own antibody fragments as needed.  In contrast, anti-IgG antibodies...secondary antibody recognizes endogenous antigens. In these cases, even though one full antibody may be ...Prospects of Antibody Fragments. Antibodies 8(2):28. https://doi.org/10.3390/antib8020028    Wessel GM...However, sometimes you want a tool that is a little more compact — more of an antibody fragment rather than...
  7. Luminescent Imaging with Nano-lanterns

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    Blog Post
    ... developed Nano-lantern technology. Nano-lanterns contain a Renilla luciferase variant fused to an FP;...contexts. Improving Nano-lanterns In 2015, Takai et al. expanded the Nano-lantern color palette to include...producing a constant supply of substrate. Using this compound to excite the Nano-lanterns, Takai et al... Nano-lanterns (eNL) described in Suzuki et al. improve the brightness of previous Nano-lanterns by 2-...appropriate for use with Nano-lantern technology. Multicolor imaging using Nano-lanterns requires a linear unmixing... signals of various Nano-lanterns, but it does not isolate each Nano-lantern, so Takai et al. used a linear...explained further in Takai et al. Nano-lanterns and ready-made Nano-lantern biosensors are available from Addgene...
  8. Antibodies 101: Flow Compensation

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    Blog Post
    ...your samples with multiple antibodies, the fluorescent probes on the antibodies may have similar emission...Introduction to Gating in Flow Cytometry Antibodies 101: Flow Cytometry Antibodies 101: Conventional vs. Spectral...this handy emission spectra chart to find your antibody's spectra). Your cytometer will therefore record...BioLegend’s Fluorophore Guide Chart.  Pro tip! Some antibodies go by different names depending on your flow ...
  9. Year of the Camelid: Antibody Style

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    Blog Post
    ...heavy-chain only antibodies in the serum of a camel and soon after found similar antibodies in llamas and...Comparison of a heavy-chain only antibody and single-domain antibody, under the commercial "Nanobody" ...to other antibodies and affinity reagents. But for a quick refresher, some of the advantages of sdAbs ...conventional primary antibodies, and there are unique benefits to using sdAbs as secondary antibodies. sdAbs, however...single-domain antibodies genetically fused to fluorescent proteins and used to visualize target antigens in living...single-domain antibodies without the need for a species that naturally produces heavy-chain only antibodies. (A)...heavy chain only antibodies) (B) Nanomice express hybrid heavy-chain only antibodies that are the source...
  10. 3 Challenges in Plant Synthetic Biology

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    Blog Post
    ...limited understanding of plant biology is a significant technical obstacle to plant synthetic biology. We...pigments (anthocyanins), and the plant circadian clock. Petunias have been a model organism for plant research...here. The first transgenic plant was engineered over 30 years ago, but plant synthetic biology is still...because working with plants can be challenging, there are a lot of unexplored areas in plant biotechnology that...themselves if they want this beautiful flower in their front yard or not. By developing plant aesthetics with...pivot towards plant biotechnology and provide a much needed boost to basic molecular plant research, more...the lack of resources associated with plant synthetic biology. Plant molecular biology has traditionally...
  11. Six Spooky Science Stories and Halloween at Addgene

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    Blog Post
    ...science stories Zombie ants Ophiocordyceps unilateralis is a fungus that infects ants and controls their ...atrophy. After the ant’s death, the fungal fruiting bodies being to sprout out of the ant’s body. The fruiting...their behavior. These ants become “zombies” and leave their foraging trail. They climb upwards until they ...temperature and humidity favors fungal growth. The ants bites down and locks their jaws into a leaf, and... onto the forest below for the next unsuspecting ant to stumble upon. Vampire bacteria Vampirovibrio chlorellavorus...genes were appropriately named as spook, spookier, phantom, disembodied, shadow, and shade. Tongue-eating ...
  12. An Integrin Antibody Toolkit from IPI

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    Blog Post
    ... IPI anti-integrin toolset IPI’s anti-integrin toolset comprises 26 recombinant antibodies (rAbs) either...Addgene's Antibody Guide Antibodies 101: Flow Cytometry Antibodies 101: Introduction to Antibodies...Table 1: IPI antibodies  Antibody Target Proteins Reactivity Isotype Source Species Anti-Integrin...unique antibodies that bind discrete subunits or particular subunit pairs. Some of the antibodies in the...property in an antibody is extremely rare. While many function-blocking integrin antibodies exist, almost...are chimeric antibodies composed of rat or mouse variable regions fused with rabbit constant domains. All...monoclonals, we anticipate that our chemically identical hybridoma-derived antibodies will also work in...
  13. Antibodies 101: Reading a Flow Plot

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    Blog Post
    ...license.    In the third plot, anti-CD14 and anti-HLA-DR antibodies conjugated to fluorescent markers...Cytometry Plasmid-based Recombinant Monoclonal Antibodies Introduction to Antibodies  ... is a cell, but it could be debris or unbound antibodies.) Each event read by the machine is plotted as...conceptualize where the populations are, try drawing a quadrant over the plot that divides it into four, using...different populations by imagining (or drawing) a quadrant over the dot plot. Created with biorender.com....Biorender! While a helpful visualization tool, a quadrant will often be too clean for real-world data. Most...using a panel of markers, which is comprised of antibodies conjugated to fluorescent markers and/or cellular...
  14. Antibodies 101: Choosing the Right Isotype

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    Blog Post
    ...Addgene The Antibody Guide Antibodies 101: Isotypes Antibodies 101: Choosing the Right Antibody  ...polyclonal antibody is better for your experiment. Monoclonal antibodies contain a single antibody clone and...anti-mouse antibody. Others recognize specific isotopes within that species, like an anti-mouse IgG antibody. Some...subclass specific, like an anti-mouse IgG2a antibody. When using a monoclonal antibody be sure to use a highly...general anti-mouse IgG. In a broadly specific secondary antibody only a fraction of the antibody molecules...example, some goat anti-mouse secondary antibodies recognize some rat primary antibodies (Erickson 1993)....primary antibodies raised in different, and distantly related, species, and secondary antibodies raised...
  15. Antibodies 101: Buffers, Storage, and Conjugates

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    Blog Post
    ...s blog Antibodies 101: Monoclonal Antibodies Antibodies 101: Polyclonal Antibodies Antibodies 101: Introduction...Introduction to Antibodies Resources on Addgene.org Find plasmids encoding recombinant antibodies at Addgene...  Once you get your exciting new antibody, the second thing you’ll want to do is store it away safely. ... check it whenever you use the antibody. This information is important, and you’ll need to track it throughout...accidentally leave your antibody out on the bench overnight. Do not panic! Typically, antibodies are okay if they...light-sensitive conjugate on the antibody left exposed to light?  Has this antibody been left out, gone through...are planning to conjugate your antibody in the lab, you’ll therefore want to research your conjugation ...
  16. Antibodies 101: The Basics of Western Blotting

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    Blog Post
    ...and detection with antisera: a method for studying antibody specificity and antigen structure. Proceedings... repeatedly stripped of an antibody and reprobed with different antibodies allowing multiple targets to...binding to the antibodies during the stain. The ideal blocking buffer depends on the antibodies and labels...your primary antibody Once the membrane has been blocked, it is stained with a primary antibody against your...interest. But which antibody should you use? You will likely find several different antibody options targeting... their antibody binds to protein of the correct size. Many vendors will show that the antibody binds to...that the antibody efficiently binds to endogenously expressed protein at physiologically relevant levels...
  17. Antibody Data Repositories and Search Engines

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    Blog Post
    ... validated antibody, we recommend using antibody search engines and antibody data repositories to find... that can help: Antibody data repositories, which share validation data, and antibody search engines, ...many different antibody catalogs at the same time.  If you're looking for an antibody, especially a validated...improving antibody quality throughout research, consider checking out the Only Good Antibodies community...If you’re looking for an antibody that works for your experiment, you may be overwhelmed by options —...find an antibody for your experiment. Search engines let you easily find and compare available antibodies...and experimental data to help you decide if the antibody is a good fit for your experiment. They come in...
  18. Introducing the Addgene Antibodies 101 eBook!

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    Blog Post
    ...looking to use antibody-based applications in their research.  Like all our eBooks, the Antibodies 101 eBook...101 blog posts on an antibody-specific topic, allowing you to easily access relevant information for planning...re very new to antibodies as research tools, you may find “Chapter 1: What is an Antibody” quite useful...to find an antibody that works, we highly recommend “Chapter 3: Finding the Right Antibody for Your Experiment...Experiment.” Whatever your antibody application question, the Antibody 101 eBook is a great place to start...excited to share the very first edition of our Antibodies 101 eBook! The latest addition to our eBook collection...
  19. Droplet Digital PCR for AAV Quantitation

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    Blog Post
    ...should first note that quantitative PCR (qPCR) has been a powerful tool for quantifying AAV for some time ...producing AAV vector preparations, we have used quantitative PCR to evaluate the physical titer of our preps...digital PCR (ddPCR) comes in. AAV titering using quantitative PCR Before we dive into the details of ddPCR...of a standard - a set of reactions with known quantities of DNA. Additionally, an AAV reference, a virus...by ddPCR begins with diluting the virus. It is important to note that the dynamic range of the ddPCR is...PCR plate. Maintaining a high droplet count is important for calculating the concentration of your sample...separation (Witte et al., 2016). This is particularly important if your amplicon is longer than 150 base pairs...
Showing: 121 - 140 of 1081 results