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.... When an ELISA kit is ordered, the wells are typically already coated with the antibody. Then, you add...process is the addition of a detection antibody (typically a monoclonal antibody) that also recognizes the...the most common type of competitive ELISA is a modification of the sandwich ELISA as described here, the...ELISA, the only difference being the additional amplification step, which helps to visualize low-abundance...concentrations of your protein of interest. The optical density (OD) - the measure of light absorbed by...concentration of any experimental wells in that range of optical densities. If your standard curve does not have...

...targeting anywhere in an exon. But things get more complicated if you’d like to use homology directed repair...edits or knock-ins. Editing efficiency decreases drastically once your cut site is more than 10 bp away from...They created a selection phage (SP) to carry catalytically dead SpCas9 (dCas9) fused to the bacterial polymerase...loci displayed a broad range of PAM sequences, indicating they may be less predictable than SpCas9 off-... that we have only scratched the surface of modifications that can be made to Cas9. It is a pleasant surprise...editing rates. This PAM flexibility should expand applications that require very specific targeting, like homology...

...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 quiescent, post-mitotic mammalian cells. Applications of CRISPR delivery by adenoviral vectors Since...and used AdV vectors to edit genes in several biological systems. It has been used for instance in inherited...Strategies for Tissue-Specific Targeting. In: Applications of viruses for cancer therapy. Elsevier, pp ...Viral vectors for gene therapy: Current state and clinical perspectives. Biochemistry Moscow 81:700–708 ....

...experts in science communication in real time! I follow great online science communicators like Phil Plait...nontraditional” career path long ago. Use your analytical mind to test and discover what career suits you...about any topic I like and gain experience in communication, editing, marketing, and website organization.... She is particularly interested in science communication and fundamental molecular biology.      Additional...  science communication...

... familial aspect of Addgene. As our size has drastically increased, it would have been a tight squeeze...event! Addgene company culture At Addgene we organically developed the philosophy of  “work hard, play...department) right in your breakroom. 5. Throw some physical activity into the mix It’s easy to sit around ...be an obvious one, but don’t make things too complicated for yourself (especially if you are the sole ...sole event planner)! If you have a very intricate itinerary, there is a higher likelihood that something ...Delegate- it will save you time and sanity!    10. Communicate Make sure people know that there is something...

...Societies, such as the American Society for Cell Biology (ASCB) or the American Chemical Society (ACS) are ...often scarce and difficult to identify. So what specifically should you do? What follows are just a few suggestions... in fact, some of the very things that were so critical to me landing my own position! Conferences One...know all in one place! This information can be critical to a focused and effective job search. As with...

...development happening at Addgene under the hood. A significant portion of our development may not be visible...ourselves. We are also able to consider different technical approaches that may come up during discussion.... information. It is quite possible that the clarifications lead to the story being scrapped or broken ...While writing the code, we may need additional clarification and again we collaborate with the Product Team... been updated in several years) or they make significant changes that make it incompatible with our software...software from Python 2.7 to Python 3.5. There are significant changes to the language and it took us a total...

...regions and allocate specific functions to them. Electrical recordings and lesioning studies have been essential...within the LC of mice. When those neurons are chemogenetically activated, norepinephrine release causes a...test has been used since the 1970s to test the efficacy of antidepressant treatment in rodents. In this...responsible for the antidepressant effect. To specifically activate the Drd1 neurons, they injected AAV2... "Hypothalamic CNTF volume transmission shapes cortical noradrenergic excitability upon acute stress."...long-lasting antidepressant effects." Nature communications 10.1 (2019): 223. PubMed PMID: 30644390. PubMed...

...possess cell walls. As a result, Mycoplasma are intrinsically resistant to this class of antibiotic. Acquired...Microbes (bacteria included) are very skilled at the delicate art of survival. Existing virtually ubiquitously...of intentions. The take-home? Always take your medication as prescribed. How do we know which bacteria ...When antibiotic resistance testing is requested clinically, this involves growing a standardized amount ...-trusted method that is frequently used in the clinical laboratory. What can we do to stop the emergence... is passionate about health equity, science communication, and public health.     References 1. O'Neill...

...FRET during a journal club, my guitarist brain automatically thought about the raised element found on the...allows the detection of molecules' interactions, modifications or dissociations in situ. Used since the mid...interactions in living cells using a microscope. Historically, molecular interactions were detected by indirect...Periasamy defined FRET as "a distance-dependent physical process by which energy is transferred non-radiatively...highest absorbing acceptor and fluorophores with significant overlap in their spectra. The pair CFP-YFP was...14. Zimmermann T,  Terjung S. FRET Basics and Applications: An EAMNET Teaching Module http://www.embl.de...

...resistance gene and the origin of replication are necessary to replicate plasmids and make sure the cells... promoters only work in prokaryotic cells and typically only in the same or closely related species from... be ways to turn them on or off at will with a chemical, heat, or light. In the cell, promoters themselves...scientists have created synthetic promoters, which typically include some combination of other promoter elements...Inducible with Tetracyline or its derivatives.  Typically contains a minimal promoter with low basal activity...

...percentage of survey respondents indicated that cost was a significant barrier to ELN adoption. This includes...priorities in most cases include IP protection, publications and funding. If any of these three pillars crashes...to digital for example): “… 99% of respondents indicated that ease of use would influence their ELN choice...collaborative functionalities include comments, notifications, sharing files, assigning team members to certain... step of the research process will save them significant amounts of time and effort and give the lab a...

... the planning section below, it’s important to dedicate specific amounts of time to specific tasks beforehand...activities that are needed to accomplish these goals. Practically speaking, this means I write everything in a ...down? It’s more viscerally appealing for me to physically cross things out (it just feels good) and I remember...instance, if I don’t have draft blog post ready for publication for tomorrow, I’d better upload that post from...handle doing a particularly annoying task and then dedicating that much time to it each day. Once you get over...Student Community Learn about Careers in Science Communication Resources at Addgene.org Check out Careers...

... minus sign (-) as is typically standard; just having the gene listed indicates it is non-functional. ...that carried out the labor-intensive process of replicating your new plasmid: the Escherichia coli bacteria...conjugation. Genes listed on F´ are wild-type unless indicated otherwise fhuA (formerly tonA) ferric hydroxamate...vectors. Used by Addgene for pooled library amplification. F' mcrA Δ(mcrBC-hsdRMS-mrr) recA1 endA1 gyrA96... Most Popular Plasmids 101 Posts: Origin of Replication The Promoter Region – Let's Go! Mammalian Vectors...

...Vincent and Niroshi Senaratne, from the Biological and Biomedical Sciences program at Harvard University...and Genomics at Harvard Medical School, and is currently a fellow in clinical genetics at the University...the Program in Genetics and Genomics at Harvard Medical School. He studies developmental gene regulation...

...target proteins of interest for labeling, quantification, purification, chromatin immunoprecipitation and more...created the Monoclonal Antibody Research Institute dedicated to: 1) developing new ways of generating antibodies...repositories provide standardized quality-control and technical support to the community. Thanks to Our Guest ...Freedom: The Expansion of Data Sharing in Research Publications ...

...Niroshi Senaratne and Ben Vincent from the Biological and Biomedical Sciences program at Harvard University...and Genomics at Harvard Medical School, and is currently a fellow in clinical genetics at the University...the Program in Genetics and Genomics at Harvard Medical School. He studies developmental gene regulation...

...the sequence of interest. 5. Use a silica spin column for purification of the samples you send for DNA sequencing...requires you to perform your own Big Dye PCR amplification reaction (as opposed to using the all inclusive...Acetate/isopropanol precipitation method or using a silica spin column available from several vendors. The...image below), so I would strongly recommend using a silica spin column. They can be pricey, but well worth...

...reason for that. Lately, significant advances in the understanding and application of CRISPR/Cas9 technology... by even splashier news: Jiahao Sha of Nanjing Medical University had successfully used the CRISPR/Cas9...caused by genetic abnormalities, targeted genetic modification in monkeys is invaluable for the generation ... Times feature when he said, “All of this has basically happened in a year. It’s incredible.” Looking...

...for reference: Untergasser Lab Preparation of chemically competent cells (protocol) Preparation of electrocompetent...until we are ready to perform transformations. A typical 200mL bacterial culture produces 20mL of competent...protocols below: Untergasser Lab Transformation of chemically competent cells (protocol)  Transformation of...being performed at Addgene, this adds up to a significant time savings. You can also save yourself time...plasmid is introduced to bacteria, the bacteria is typically grown in liquid culture without antibiotics to...