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We narrowed to 520 results for: HA tag

Showing: 361 - 380 of 520 results

  1. A Deep Dive into BioBuilder

    Type
    Blog Post
    ... receiving training modules in synthetic biology has grown into a recognized name in the field of STEM...logic gates. This BioBuilder-Caltech collaboration has resulted in a new BioBuilder book chapter and an ...recognized platform in March to exhibit projects at any stage of completion, from pitch to prototype. Last year...preparing local (Massachusetts), economically disadvantaged students for paid summer internships. A summer...

  2. Starter guide to induced pluripotent stem cells (iPSCs) part 1:  A renaissance in regenerative medicine

    Type
    Blog Post
    ...through to the morula stage are totipotent [2-4]. Pluripotency: When a cell has the ability to differentiate... of stem cell potency: Totipotency: When a cell has the ability to produce all of the differentiated ...therapeutic purposes. Both types have their advantages and disadvantages. Here is a table listing some of them... system which combined the advantages of both while limiting disadvantages led to the creation of induced... Induced Pluripotent Stem Cells: Problems and Advantages when Applying them in Regenerative Medicine. ...

  3. Antibodies 101: Choosing the Right Isotype

    Type
    Blog Post
    ...a look at the secondary antibodies that your lab has on hand and choose a primary antibody that will work...secondary antibody pairing such that each target has a unique species or isotype that can be probed with...polyclonal primary antibodies.  I hope this post has explained when and why antibody isotypes matter and...isotypes and subclasses. They each have their own advantages. Since monoclonal antibodies contain a single...

  4. The Materials Science of Optogenetics Experiments

    Type
    Blog Post
    ...    In the video above, Channelrhodopsin 2 (Chr2) has been expressed in the motor cortex of a mouse. Upon...appropriate wavelength to stimulate your opsin. Each opsin has an excitation spectrum (use the resources discussed...controlled. As discussed above, each opsin variant has slightly different activation/inactivation kinetics...several groups [4, 5, 6]. These have the obvious advantage of not requiring patch cable connection to the...

  5. 7 Simple Strategies to Resolve Conflicts with Difficult Supervisors

    Type
    Blog Post
    ...your supervisor’s expectations Every supervisor has their own management style. A hands-on supervisor...agree with all of your ideas, but he or she probably has reasons for it. Do not take criticism personally ... of Finish Your Thesis, an online community that has supported thousands of graduate students since 2009...people: Hostile-aggressives, who are usually antagonistic and impolite, Complainers, who spend most ...

  6. Which Fluorescence Microscopy Techniques is Best for Me?

    Type
    Blog Post
    ...establish for this to happen.Using red light has a second advantage: red light penetrates deeper into biological... to its unrivaled contrast, fluorescence imaging has emerged as the dominant light microscopy contrast...blue to excite a molecule of GFP. Because red light has approximately half the energy of blue light, two ...imaging depths closer to 1 mm. Traditionally, 2-photon has been a very slow imaging technique but recent advances... modern explosion in light microscopy techniques has provided biologists with a host of tools and opened...

  7. Advancing Biology with Zebrafish: Genetic Tools for Developmental Studies and More

    Type
    Blog Post
    ...deactivate specific genes are needed. Targeted mutation has been demonstrated in zebrafish using zinc-finger ... in all cells of the developing zebrafish embryo has been mapped using single cell RNA sequencing approaches...1990’s, two revolutionary large-scale random mutagenesis screens produced ~1,500 zebrafish mutants that...to study development and disease. Additional mutagenesis projects have since been initiated and today ...gene deactivation tools for zebrafish Random mutagenesis screens provided a major toehold into understanding... the one-eyed pinhead mutant from the random mutagenesis screens. Microscopy-based lineage tracing can...profiled 38,731 cells from 694 embryos over multiple stages and reconstructed the patterns of gene activity...

  8. Future of Research Conference - Remarkable Opening Session

    Type
    Blog Post
    ...keynote speaker, Dr. Henry Bourne (shown in photo), has been speaking out and writing about issues in our...the same time, he pointed out, academic research has some big problems resulting from past practices and...alternate training needs to be provided to take advantage of all the possible science careers. She advocated...

  9. CRISPR 101: Non-Homologous End Joining

    Type
    Blog Post
    ...HDR, NHEJ is active throughout the cell cycle and has a higher capacity for repair, as there is no requirement...ends interfere with that step. Accordingly, NHEJ has a vast toolbox of processing factors, including polymerases...Wyatt and Dale Ramsden, UNC at Chapel Hill. One advantage to using the CRISPR/Cas system for genome engineering...Persistence of a Chromosome Break Diminishes Its Mutagenic Potential. PLoS Genet 5:e1000683 . https://doi.org...

  10. Advice for Choosing a Research Project

    Type
    Blog Post
    ...research project can take several years to complete and has multiple benchmarks. Think about what your personal...Have a look at what others have done recently that has been a big hit, and especially look at the new tools... as a stepping stone into the next professional stage of your career by connecting you with people of ...

  11. Stabilized Bacterial Promoters: Constant Gene Expression at any Copy Number

    Type
    Blog Post
    ... genes of interest into the chromosome. But this has its own set of problems. Rapidly dividing cells initiate...rounds of replication are initiated before the cell has divided. This means that genes located near the origin...growing slowly or quickly Growth media and growth stage can both affect gene copy number. Moreover, gene...References 1. Segall-Shapiro, Thomas H., Eduardo D. Sontag, and Christopher A. Voigt. "Engineered promoters...

  12. Gendered Innovations: Why Does Sex of the Cell Matter?

    Type
    Blog Post
    ... human suffering and death. Doing research right has the potential to save lives and money. A 2014 analysis...physiologic or pathologic processes. Much progress has been made in this area in recent years, and you can...important point, however, is that cost at this early stage of research is minimal compared to that of human...trials. And, as Janine Clayton points out, late-stage clinical studies that draw from a body of research...

  13. Adenoviral Delivery of CRISPR/Cas9 Aims to Expand Genome Editing to Primary Cells

    Type
    Blog Post
    ...often used, the CRISPR approach based on HDR has the advantage of being a potentially universal treatment... to edit genes in several biological systems. It has been used for instance in inherited disorders such...-transformed cells yielded rates of targeted mutagenesis similar to those achieved by isogenic AdVs encoding...gRNAS1, and pAdSh.U6.gRNAGFP. Gonçalves says that advantages of AdVs include their episomal nature and very...CRISPR/Cas9 nuclease complexes induces targeted mutagenesis in a diverse array of human cells. Sci Rep 4:...

  14. Mobile-CRISPRi: Bringing CRISPRi to Diverse Bacteria

    Type
    Blog Post
    ...interference (CRISPRi) has been limited to lab-adapted bacteria because it has been challenging to introduce...the bacterial Tn7 transposon system. This system has two parts: a plasmid expressing the Tn7 transposition...for CRISPRi transfer Mobile-CRISPRi offers two advantages over existing bacterial CRISPRi methods. First...

  15. Handling Plasmids from Addgene - Purifying Plasmid DNA

    Type
    Protocol
    ...buffer such as TE. You will now have plasmid DNA that has been purified away from the bacterial proteins and...DNA are denatured. Pro-Tip Do not vortex at this stage or the genomic DNA will become sheared and will ...

  16. Plasmids 101: Repressible Promoters

    Type
    Blog Post
    ...developed for use in mammalian cells, this system has also been implemented in a variety of other organisms...Drosophila cells. Work by Wei et al. from Kang Shen’s lab has also shown that the Q system is also functional in...elegans. Subsequent work by the Luo and Potter labs has refined the Q system and introduced the second generation...multiple genes in synthetic systems. Recent work has even used all 3 in a single modular vector for ease...GAL4 gene downstream of a tissue- or developmental stage-specific promoter and design a UAS reporter construct...

  17. Antibodies 101 Series on TikTok

    Type
    Blog Post
    ...learn about antibodies? Our new antibodies animation has all the information! Link in bio. #STEM #antibodies...our videos will also be shared on our @addgene Instagram account, or you can watch the full animation on...

  18. The Effect of COVID-19 on Liu Lab Plasmid Requests From Addgene Data

    Type
    Blog Post
    ...months, COVID-19 has had a tremendous impact on our world -- as of June 4, 2020, COVID-19 has caused an estimated...contains requests from 5/22/14 to 5/19/20). Each paper has between 1–32 plasmids and a total of 2–2,590 requests... 5: Inferred effects. Values are the inferred percentage of normal activity (the average rate of unique...

  19. Getting to Know Expansion Microscopy

    Type
    Blog Post
    ... its introduction in 2015 by the Boyden Lab, ExM has been steadily growing in popularity with an abundance...target concentration during expansion. One group has found that using Fab fragment secondaries, rather...experimental approaches. Since it arrived on the scene, ExM has helped researchers gain a deeper understanding of...expansion.  In some cases, labels are added after this stage.  Step 4: Expand! (Typically by just adding water...

  20. Tips from the Repository Trenches: Using Barcodes to Track Samples

    Type
    Blog Post
    ...plasmid we have at Addgene. Each sample at Addgene has four layers of location which can all be extrapolated...hold up to 96 tubes (see image below). Each plate has numbers and letters to give coordinates, from A1 ...replicate sample. The transformation After the DNA has been received and stored, it is put into E. coli ...and prepare fresh media with antibiotics at each stage. The barcodes and LIMS help us track each sample...
Showing: 361 - 380 of 520 results