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We narrowed to 1,054 results for: STI

Showing: 201 - 240 of 1054 results
  1. Trading Spaces - Visiting Scientist Edition

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    Blog Post
    ... host lab or institute provides something that you can’t obtain at your current institute. A common reason...don’t have, or maybe both, a visiting scientist stint may be ideal for you. Here, we will chat about who...scientist, in academia, is someone who visits an institution to perform research there temporarily. The length...The researcher remains employed by their home institute, meaning the host university does not hire or ... pay them (typically). A visiting scientist is distinct from equipment sharing or a collaboration – it...requires re-location of the scientist to the new institute where their typical workdays will be carried out...back to your home lab. Alternatively, the host institute may have a piece of equipment that is custom-built...
  2. The Many Reasons for Irreproducible Research- and a Vaccine to Eradicate It

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    Blog Post
    ...specific statistical test.  Preregistration makes clear the distinction between hypothesis testing work, ... and other questionable research practices (QRPs) can quickly lead us to find statistically significant...encouraged to present that work using hypothesis testing statistical tools that generate a p-value.  As an example...authors are able to make that clear distinction between hypothesis testing and generation, can be sure that...biomedical and psychological sciences were called into question after credible attempts to replicate major findings...instead of the methods. Unreported flexibility and questionable research practices In an attempt to present ...and hypothesis generation, in which data are investigated to look for unexpected trends or differences...
  3. Addgene Welcomes John Doench to the Advisory Board

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    Blog Post
    ...process. This early research is still relevant to his work at the Broad Institute today, where he helps researchers... to answer their own research questions. Starting at the Broad Institute For his post-doc, Doench worked...towards the Broad. In order to ask interesting biological questions, you need a tremendous amount of technology...with scientists asking biological questions. Doench loves that he still gets to see data as it’s coming ...the Broad Institute here Read other blog posts about CRISPR Learn more about the Broad Institute and the...the Genetic Perturbation Platform at the Broad Institute and has worked with many Addgenies to help improve... School and then applied to work at the Broad Institute: “The model that the Broad was building that had...
  4. 28 Hot Plasmid Technologies from 2015

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    Blog Post
    ...(BRET) were developed by the Johnson Lab . Characteristics of the pHlash reporter protein include: H+...large changes in binding affinity with light stimulation. Indeed oLID showed only a two-fold change in...50 fold change in binding affinity with light stimulation2. The Kuhlman lab created two improved Light ...specific genes via user-defined guide RNAs. Upon stimulation with blue light, the complex recruits a CIB1 ...pUCXKT, removing the stop codons during backbone digestion and providing the missing codons for functional...C-terminal tags. Additionally, by using an adapted destination vector with a heterologous promoter outside of...create an Entry vector containing a promoter for constitutive (CMV, SV40, SFFV) or inducible (CMV-TO) cDNA...
  5. 22 Hot Plasmid Technologies from 2014

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    Blog Post
    ...components into a destination vector in a predefined order. Finally, the destination vectors are used ...the positional groups. Eight final destination vectors, consisting of all four final RVD modules in each... this by selecting the important elements from existing transposon and vector systems and creating an ...transport. pMitoTimer from Yan’s lab, which is constitutively expressed, reports on the balance of biogenesis...fluorescence microscope 8 hours post-pulse. The distinct differences of red-to-green fluorescence in individual...modular system for easier exchange and re-use of existing elements. DNA sequences for a desired component...be used for each Multisite Gateway compatible destination vector for a maximum of 24 elements assembled...
  6. Plasmid Collections

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    Collection
    ...Plasmid Collection and Resource Center Do you have suggestions for other plasmids that should be added to this...
  7. Optogenetics Plasmid Collection

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    Collection
    ...last reviewed: 25 September 2025 Do you have suggestions for other plasmids that should be added to this...
  8. Multifunctional Neural Fibers: Modulation from Gut to Brain

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    Blog Post
    ...interest, and stimulate or manipulate responses through neurological means like electric stimulation, drug administration...Due to the soft nature of the intestines and the requirement for digestive motility to not be disturbed...response to both of these stimulations. The best part? The chemical stimulation was sucrose…..sounds like...validated simultaneously in the brain and the intestines of mice. The result? A very cool tool to advance...Anikeeva lab are microelectronic fibers made from thermoplastic polymers that can work with all the bells and...engineering road map of sorts, giving an idea of the stiffness the fibers would need to be, as well as other ...function (the gut twists and contorts during the digestion of food, while brain tissue is relatively static...
  9. Using CRISPR/Cas9 to Edit Disease Out of the Genome

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    Blog Post
    ...Hubrecht Institute in The Netherlands used the CRISPR/Cas9 genome editing system to correct the cystic fibrosis...homologous recombination in cultured intestinal stem cells of patients with cystic fibrosis (8).   The difference...therapeutic.” There are many fundamental questions about CRISPR/Cas biology still left to answer as well, she says...Repair of CFTR by CRISPR/Cas9 in Intestinal Stem Cell Organoids of Cystic Fibrosis Patients." Cell Stem ...and precise, researchers are now using it to investigate potential therapeutics for complex genetic diseases...adult stem cells isolated from two patients with cystic fibrosis. They were able to demonstrate functional...stable,” said Gerald Schwank, first author of the cystic fibrosis report. “This is a big advantage over ...
  10. Tips for a 1st Time CRISPR User (by a 1st Time CRISPR User)

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    Blog Post
    ...sized digestion products (that would co-migrate on a gel) instead of two different sized digestion products...need/want to put the digestion site in the middle of the PCR product, you would still be able to identify...undigested control can help distinguish between a smear and a faint digestion product. Also, depending on...transduced (MOI = 37) and selected with 1 µg/mL blasticidin for 9 days. Single cells from a stable cell pool...then expanded for an additional 3 weeks under blasticidin selection. Anti-Cas9 Western blotting was performed...cells in the population, so some of the cells will still appear green despite having active Cas9 (see tip... target different regions of your gene. I used existing BRAF gRNA viruses. There are a few reasons to ...
  11. Chemogenetics Plasmids

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    Collection
    ...last reviewed: 25 September 2025 Do you have suggestions for other plasmids that should be added to this...
  12. New Tool for Lineage Tracing: The ClonTracer Library

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    Blog Post
    ...developed this tool, there were so many interesting questions that we could apply [it to].” Using ClonTracer...Library, deposited by Carrie Bhang, a research investigator in the In Vivo Pharmacology group at Novartis...environment” with a strong focus on publishing, but still made it so she could “get exposure to the drug discovery...started using the tool to look at a variety of questions surrounding cancer development, metastasis, and...drug treatments arise during treatment or are preexisting in the parent population prior to the start of...from the same parent cells that represent the preexisting resistant subpopulation 2. Resistant cells among...would have different labels - i.e. they would stochastically arise from different cells throughout the treatment...
  13. A Primer on Optogenetics: Introduction and Opsin Delivery

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    Blog Post
    ...viral expression but may still be sufficient for successful stimulation. Testing opsin expression  Regardless... of Antonello Bonci, Director of the National Institutes of Drug Abuse Intramural Research Program (NIH-NIDA...you want to use optogenetics The most important question to consider is what exactly do you want to use...optogenetics is best used to address a specific question. Optogenetics is a tool and, just like any other...circuit of interest in promoting reward is a self-stimulation experiment wherein mouse initiated optogenetic...in a reward sensation and subsequent repeated stimulation. A spatial memory task, on the other hand, would...opsin of choice in the brain region you wish to stimulate 2) Fabrication and implantation of the optical...
  14. CRISPR 101: Multiplex Expression of gRNAs

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    Blog Post
    ...ligated into Cas9 or dCas9-containing destination vectors. Destination vector options include humanized wt...Addgene. 8. Xie, Kabin, Minkenberg, Bastian, & Yinong Yang. “Boosting CRISPR/Cas9 multiplex editing capability...editing. Multiplexing gRNAs: the basics One common question Addgene Senior Scientists receive is: can I express...ordered assembly of multiple components into a destination vector. The first step in CRISPR/Cas9 Golden ...oligonucleotides specifying each gRNA target sequence into distinct expression vectors using the enzyme BbsI. These...together to allow for ordered assembly into a destination vector that expresses Cas9. This is illustrated...drive ordered assembly into a Cas9-containing destination vector. Note: depending on which method you use...
  15. CRISPR Plasmids - Base Edit

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    Collection
    ...Content last reviewed: 17 October 2025 Do you have suggestions for other plasmids that should be added to this...
  16. Virtual Science Conference Coming Up? Three Addgenies Share Their Experience

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    Blog Post
    ... where you can type in questions for the speaker. “I think a lot more questions get answered this way ...audience can help decide which questions get answered. “You can upvote a question and the host will see the...upvoted question.”If the Q&A session ran out of time, the speaker could continue to answer questions in the...thought of walking up to the mic and asking your question in a large conference room puts butterflies in...the highly voted questions,” says Zhang. “Usually the moderator starts by asking the speaker the highly...audience engaged. They first sent a pre-workshop questionnaire to the participants to learn about what they... when you are giving a research talk, there are still other ways to make your session more engaging, for...
  17. Career Insights: Technical Support Specialist

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    Blog Post
    ...prepares one for numerous non-academic careers. Still, many start their scientific careers hoping to follow... documentation of my results, answer loads of questions, and I also had to do some troubleshooting as ...ahead and contact a technical support team with a question or two that open a dialogue. This will give you...there is considerable diversity in the types of questions customers ask, and there are also differences ... in a technical support role. What general characteristics do jobs in technical support have? There are...Correspondent or similar. While there isn’t a clear distinction between these job titles, they may be different...team accepts any incoming requests and answers questions that are less time consuming and/or less technically...
  18. Cancer and the Immune System: Deciphering the Relationship

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    Blog Post
    ...development of immunotherapeutics. There are still many important questions in this exciting field of research.... complicated and dynamic phenomenon that is interestingly responsible for tumor reduction as well as progression...inflammatory responses can augment tumor growth. Indeed, lasting responses to viral infections have resulted in ...chemical signals such as IL-8, IFNγ, and colony stimulating factor 1 (CSF-1). Additionally, tumor cells recruit...cell-surface proteome to inhibit expression of co-stimulatory molecules needed for T cell effector function...surfaces to avoid recognition by CD8+ T cells. Existing therapies and effects on immune system Conventional... However, these conventional therapies produce lasting side effects, damage healthy cells, and often cannot...
  19. Adenovirus Plasmids

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    Collection
    ... last reviewed: 12 November 2025 Do you have suggestions for other plasmids that should be added to this...
  20. Zebrafish as a Model for Behavior: Swimming into the Optogenetic Spotlight

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    Blog Post
    ...startled by acoustic, visual or tactile stimuli, larval zebrafish react by performing a distinct C-bend to... first 2 weeks of life, larvae already exhibit distinct behaviors such as spontaneous swimming and escape...neuron more positive or more negative.  Neuronal stimulation: Depolarization When the inside of the neuron... NpHR, can even be expressed simultaneously and still be individually activated with different lights ...behavior is not done in response to any specific stimulus. While the escape response neural pathway is well...groups were activated or “turned on.” In order to distinguish between swimming behaviors, the researchers measured...immobilized in agar at the head with their tails still free, and different regions of the spinal cord were...
  21. FastCloning: A Newer, Simpler Cloning Technique

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    Blog Post
    ...techniques and is a multi-step process consisting of digestion, purification, ligation, and transformation...of the polymerase generates sticky ends in the PCR reactions. These sticky ends are annealed and ligated...used techniques in the biological sciences and constitute foundational elements of biomedical research....transformation. While restriction cloning is still routinely performed by many labs, a variety of other cloning... of cloning has its advantages, most scientists still encounter several struggles with these techniques...Restriction Enzymes + - PCR Amplification + + Digestion + + Gel Purification + - Ligation + - Transformation...restriction enzyme DpnI to remove the templates. Digestion products are then transformed directly into chemically...
  22. Deaminet 2026: Breakthroughs in Base Editing, Deaminase Biology, and Therapeutic Translation

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    Blog Post
    ... A disease-agnostic prime editing strategy Steven Erwood (David Liu’s lab, Broad Institute), presented...demand: CRISPR plasmids deposited as early as 2013 still account for ~4% of all 2025 distributions. At the...Here are six take-aways from the meeting. 1. Mechanistic deep dives: Understanding deaminases at atomic...the dominant pathway for ABE8e activity. These mechanistic insights are now being incorporated into diffusion...off-target editing is becoming more diverse, mechanistically complex, and harder to predict. Several talks...target sites than edit-only approaches and revealed distinct noncoding off-target landscapes for ABE8e and ...multiple guides in one experiment were presented. BESTIE (Nicola Osgood, UC San Diego) enables pooled screening...
  23. The CRISPR Software Matchmaker: A New Tool for Choosing the Best CRISPR Software for Your Needs

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    Blog Post
    ...contributed by guest blogger Cameron MacPherson at the Institut Pasteur CRISPR software and the piñata effect ... group (Biology of Host-parasite Interactions, Institut Pasteur, Paris) that changed genome editing in...right software to use. With so much choice the question I have is, how did we get here in the first place..., like the miRNA bubble before it, offers an interesting view into how rapid innovation affects the research... lack of features in a single application. The question is then, should we use all tools as some kind ... can be used to aid design. These databases are still young and will require a collaborative effort from...arbitrary PAM definitions. These newer tools may still prove somewhat useful for the latest NTT targeting...
  24. Deciphering the Mysteries of Behavior with Viral Vectors

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    Blog Post
    ...Vincent Jean Pascoli, and Christian Lüscher. "Refining deep brain stimulation to emulate optogenetic treatment...Optogenetic stimulation of medial prefrontal cortex Drd1 neurons produces rapid and long-lasting antidepressant...norepinephrine to promote vigilance. A recent study investigated the injection of AAV8 particles expressing an...animal has been exposed to morphine or other stimulating drugs, it develops an enhanced propensity for... al., 2015) used optogenetics to support these existing findings by controlling neurons in the mPFC with...the open (risky). Taking advantage of these characteristic traits, rodents can be used to study anxiety....   A study from 2014 (Howerton at al. 2014) investigated the connection between neuroinflammation and...
  25. The Challenges of Cell Culture

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    Blog Post
    ...technique is still used today to test for HeLa contamination. HeLa contamination is still a problem today...Science (DBCLS),  National Cancer Institute, Public Domain, National Institutes of Health, Wikipedia user Aimecie...for a range of testing, from animal doping to forensics, DNA sequencing to drug testing. You can find ... there would be no viable viruses to study. Interestingly, due to certain high profile problems surrounding...favour of biochemical assays followed by in vivo testing. The mantra being “you can’t trust those whacky...provenance (this is the history of the cell line consisting of records of the origin and propagation of the...closely followed by T24 bladder cancer cells. Estimates of the amount of money wasted in basic oncological...
  26. Resume Writing for Non-academic Science Careers

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    Blog Post
    ...resume for the job posting. For example, if the job asks for experience in “statistical analysis”, mention...mention “statistical analysis” (word by word) in your resume. If the job posting says “French-speaking is...Start browsing job postings and look at the jobs you are interested in. Consider listing the skills you already...their job postings and salary expectations public, so start by looking at these university postings to give...than 2 pages long. Write your resume for the job posting Don't think a resume is "one size fits all" like...handled large data sets and are familiar with statistical analysis. If you have done fluorescent imaging... yourself a sense of what to expect. If you are still debating whether to stay in academia or not, it ...
  27. SARS-CoV-2 Pseudotyped Virus

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    Collection
    ...last reviewed on 01 October 2025. Do you have suggestions for other plasmids that should be added to this...
  28. With an Eye Towards the Future, We Look Back at the March for Science

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    Blog Post
    ...science policy, public outreach, and restorative justice.  Follow her on twitter @sung_vanessa. Albany, ...students could walk around and ask scientists questions about their work. Thousands of people showed up...Science and Engineering at Rensselaer Polytechnic Institute. He also studies energy markets in his spare time...policies—many of which impact reproductive rights and justice. Whether it’s used to fight the myths that abortions...issues hit hardest. According to the Guttmacher Institute, most women of reproductive age live in a state...but we're now in a rift where our integrity is questioned and cuts to life-saving research are being proposed... us. I worried the march would be a simple, unquestioning celebration of science, at a time when scientists...
  29. Evolution of Lab Techniques

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    Blog Post
    ...recognized by the restriction enzyme MstII. When a restriction digest with MstII and southern blotting are conducted...knockout experiments to forensics and clinical diagnostics. One example of southern blotting being used ...are observed because the DNA has the site where MstII cuts. In a patient with sickle cell anemia the enzyme...real-time PCR to answer the same experimental questions. Real-time PCR detects and quantifies a gene or...saving the researcher both time and resources (3). Still, researchers generating transgenic animals may choose...commonplace, researchers used restriction mapping to investigate DNA sequence content by comparing the fragments...helped researchers at a time when sequencing was still in the early days of development. Today, researchers...
  30. Plasmids 101: Golden Gate Cloning

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    Blog Post
    ...eliminated by digestion/ligation and do not appear in the final construct. The destination vector contains...hands-on time, as digestion and ligation can be done in one 30-minute reaction. The destination vector and entry...IIS enzyme and ligase. Although the original destination vector + insert may spontaneously religate, this... to efficiently clone up to 7 gRNAs into one destination vector, making multiplexing easy.  Disadvantages...100% sequence-independent: to avoid undesired digestion, the Type IIS site used must not be present within...assemble. One way to work around this is to "domesticate" your fragment: PCR-based amplification can be...inactivation step. If your genes of interest or destination vector contain multiple internal restriction ...
  31. Why Do I Need an MTA Anyway?

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    Blog Post
    ...those questions! MTAs protect you and your institution, and almost all universities and institutions require...protective of both the providing institution and the receiving institution. Therefore, many technology transfer... when scientists are sharing their materials. Questions about intellectual property rights, pending publications...transfers. The UBMTA was drafted by the National Institutes of Health (NIH) and adopted by the Association...benefits for both the providing and receiving institutions and their respective researchers. Check out ...knowing your rights – and the rights of your institution – are protected while we handle all the paperwork... to you, or we can send it directly to your institution’s MTA coordinator. Organizations that have opted...
  32. Hot Plasmids May 2018 - Optogenetics, Decaffeination, Biosensors, and Fluorescent Protein Tools

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    Blog Post
    ...at the Korea Advanced Institute of Science and Technology (KAIST) and Institute for Basic Science (IBS..., a researcher can cause them to interact by stimulation with blue light.  Similarly, light can also be... and is reversible upon termination of light stimulation. CRY2clust enables faster assembly and disassembly...integrated into a Ca2+ -modulating optogenetic system (OptoSTIM1), caused two-fold faster changes in intracellular...Listen to the soCoChR podcast segment Optogenetic stimulation is a powerful tool used by neuroscientists to...Finally, using synaptic receptor blockers to distinguish real and artifactual postsynaptic currents (PSCs...artifactual PSCs commonly observed with direct stimulation are largely absent in the soCoChR-expressing ...
  33. Adapting Toehold Switches to Detect Zika Virus

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    Blog Post
    ...and called for the fast-tracked development of diagnostics. Mostly transmitted by Aedes mosquitoes (aegypti...regions of South, Central, and North America. Diagnostics will play an important role in helping to monitor...fellows with Jim Collins and Peng Yin at the Wyss Institute (Harvard University), we developed two new enabling...Pardee et al, 2014). As a demonstration of the diagnostic potential of these combined technologies, we ...of antibiotic resistance and strain-specific diagnostics for the Ebola virus. Our original proof-of-concept... the critical need for low-cost, field-based diagnostics, our approach could make an impact. Our motivation...paper-based platform into clinically relevant diagnostics for the Zika virus was daunting. It took a true...
  34. Finding Your Perfect Job After University

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    Blog Post
    ... a summer role as a Research Scientist at the Institute of Cancer Research in Sutton, located on the edge...pediatric kidney cancer. This was particularly interesting as I had just completed my thesis on the study...tend to pay better. I worked in a Microbiology testing facility, where I tested materials for bacterial...bacterial contamination. It was a really interesting job at first, everything was very new, and everything was...job received many applications, employers were requesting that only scientists with an MSc or higher apply...to help cover the costs. My MSc courses were interesting and luckily genetics is a sector which has been...been rapidly growing. These factors left me optimistic that I would find a genetics related role soon ...
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