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Showing: 661 - 680 of 1028 results
  1. Corralling and Cornering the Goldilocks Antibody

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    Blog Post
    ...review analyzing and explaining the antibody crisis states that up to 50% of all commercially available antibodies... to have an intuitive guide for checking their staining and neuroanatomy without the fear of referencing...please contact us here! Ava Shipman is a research assistant in lab of Zhuhao Wu at the Icahn School of Medicine...Bradbury, A., Plückthun, A. Reproducibility: Standardize antibodies used in research. Nature 518, 27–29...
  2. Adenoviral Vector Production and Troubleshooting

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    Blog Post
    ...AdV plasmid construct from step #1 and allowed to stay in culture for up to 20 additional days at which...is required if rAdV is to be used in vivo. The standard method for purification of rAdV uses cesium chloride...viral DNA packaged in virions is determined by a standard curve of known quantity and primers specific for...with serial dilutions of rAdV, fixed, and then stained 10 days later. Plaques are counted and titer is...
  3. A New Generation of Adenine Base Editors Improves Editing in Primary Human Cells

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    Blog Post
    ...widely used base editing systems, ABE7.10 (and the starting point for a new generation of ABEs), consists ... needed to produce 3 concurrent base edits to withstand antibiotic selection. As a result, 8 mutations... which resulted in variants named “ABE8.x”: “8” stands for the eighth round of ABE evolution and the “...frequency over ABE7.10. The ability to use non-standard Cas9 in the ABE8 complexes enables a broader targeting...
  4. Tips for Technical Support Calls

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    Blog Post
    ...in helping us understand the nature of your concern. Please be courteous. We understand how exasperating...ready. I've attempted to answer several emails that start: “Hi! We ordered something from you and it’s wrong...last digit: An answer should come soon, but not instantly. Addgene tries to get back to customers within...
  5. Magnetic Control of Proteins: More than a Dream

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    Blog Post
    ...that might serve as a starting point for developing useful tools. A lucky start As Andrew and Maria explained...questions alone. They readily admit they don’t fully understand the physical mechanism, though they have collected...luck) to get here, he believes MagLOV is just a starting point for much more. If you’re interested in working...
  6. Fluorescent Proteins 101: Fluorescent Protein Timers

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    Blog Post
    ...cell, organelle, and protein localization. For instance, you might dye your cells and look at them under...researchers can look at a single image of a cell and understand how protein localization changes over time.Hallmarks...can be used in any situation where one wants to understand the relationship between the age of a cell, protein...biological event (trafficking to a subcellular location, start of gene expression, development of a cell structure...
  7. The Scientific Conference Poster Session: Tips for Success

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    Blog Post
    ...crucial background. Practice a few times while standing at your poster – it’s a different experience to...your computer screen than it is to pretend you’re standing at the session. Present with confidence Now that... asked a question that we don’t fully hear or understand what we are being asked. I am personally guilty...one. Take a deep breath, and if you don’t fully understand the question, ask for clarification. Having them...
  8. 3D Printing Meets CRISPR Cas9

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    Blog Post
    ...days of structural biology, Byron Rubin, a crystallographer working with Jane Richardson, provided an ... model of the protein in your hand – you will understand the power of a physical model. Until then, you...turn it over and over in their hands. They then start talking to themselves as they compare the features...Under the guidance of a trained educator, these instances of focused attention become magical teaching moments...
  9. AAV Vector Quality Control: Going the Extra Mile with NGS

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    Blog Post
    ...in vivo studies, our scientists perform all the standard quality control assays for AAVs. These steps include... Unfortunately, humans have been known to make mistakes. What if a tube is mislabeled or someone grabs...vectors? Viral genome sequencing Thanks to the establishment of in-house sequencing capabilities and Seqwell...sample at 5%. Detecting 5% contamination is a good start, but to determine the sensitivity of our method ...
  10. An Introduction to Adenovirus

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    Blog Post
    ...a physiological effect of SARS-CoV-2 toward destabilizing one’s natural immune response to Adenovirus ...Adenoviral vectors are commonly derived from the mastadenovirus members (mammalian-infecting members) of the...delivery and for oncolytic virus in addition to standard uses in gene therapy and in basic research, like...death protein (E3-11.6K) is required at very late stages of infection for efficient cell lysis and release...
  11. SciComm: Taking Science to Elementary and Middle Schools

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    Blog Post
    ...curriculum. It’s through the PTA that I recently started coordinating the annual Math & Science Night, a...scientist. I gave a timeline of my science life, starting back to Mr. Kelley, my 7th grade biology teacher...them had imagined for a scientist. I think that establishing this history helped demonstrate that a) I was...curriculum and offered engaging examples of how understanding genetics is so timely.” Genome engineering, ...
  12. The Importance of a Fun Workplace: Company Culture at Addgene

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    Blog Post
    ...Our story today starts with a bit of Addgene history... As you may be aware, Melina Fan, her brother ...buidling - they relieved some of the pressure of start up life and maintained their sanity by throwing ... at Executive Director Joanne Kamen’s home- a testament to the familial aspect of Addgene. As our size...will avoid chaos and delays in getting the fun started. I’m aware that  “organizing the fun” sounds a ...
  13. Sharing Your Lab Protocols: Using Apps to Save Time & Track Your Experiments

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    Blog Post
    ...protocol. Many scientists, publishers, and small start-ups are turning to software apps to solve our need...are just a few promising options to get your lab started:   7 ways to share your lab protocols online Addgene...Check out all the benefits and how you can get started on our deposit page. Protocols.io Website: http...satisfaction of checking off each step as you painstakingly complete your experiment – one small victory...
  14. Twenty Years of Sharing: Addgene's Viral Vector Service

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    Blog Post
    ... the lab somewhat mirrors the complexity of understanding their wild counterparts. Those familiar with...process that isn’t as simple as it seems. Take, for instance, the GCaMP-encoding viral vectors available in...revamped our viral vector selection process to standardize our feedback and evaluation of viral vectors....requestors can upload their experimental data in a standardized format, sharing how well a given viral vector...
  15. Hot Plasmids - November 2023

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    Blog Post
    ...similar or better efficiency than PEmax, the current state-of-the-art. PE6b was very efficient for short, unstructured...fluorescently labeled. Using lentiviral vectors to stably or inducibly express tagged iPAK4 from different...distribution and has been verified to perform well in standard IHC and western blot protocols. You can find more... Figure 5: Delipidated mouse brain tissue was stained with Anti-PSD-95 [K28/43R] (70 µm mounted sagittal...
  16. What's Your Organism? Expanding Genomic Tools via the NSF EDGE Program

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    Blog Post
    ...purpuratus, the spiny purple sea urchin. It’s not a standard model organism, but it was easy to harvest eggs...this wonder of the organism.   It’s not an overstatement to say that CRISPR/Cas9 editing is one of the...which these methods are presently unavailable.” As stated by one of the NSF program directors, this program...Now what? What would you study first? They are starting by seeing if they can change long legged lizards...
  17. Supporting Reproducibility with a Connected ELN

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    Blog Post
    ...original formatting. In this way data is moved from a static and isolated vehicle and becomes part of the dynamic...permanent research record, yet they are crucial to understanding research and the thinking and workflows that...third-party access to the ELN arises here. Notwithstanding access restrictions based on permissions, however...it would be possible to grant those wanting to understand and/or attempt to reproduce research relating...
  18. The PAM Requirement and Expanding CRISPR Beyond SpCas9

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    Blog Post
    ... Cas9 orthologs have been isolated, and our understanding of their PAMs is shown in the table below.  ... Streptococcus pyogenes (Sp) 3' NGG Staphylococcus aureus (Sa) NGRRT or NGRRN Neisseria ... useful than SpCas9. For example, Cas9 from Staphylococcus aureus (SaCas9) is about 1 kilobase smaller...Zhang F (2015) In vivo genome editing using Staphylococcus aureus Cas9. Nature 520:186–191 . https://doi.org...
  19. Plasmids 101: Control Plasmids

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    Blog Post
    ... For every experiment, an investigator needs a standard against which the results can be compared; results...inconclusive and unreliable. Proper controls provide the constant variables that enable the correct interpretation...should be included as these provide the baseline/standard against which other samples can be compared. The...least you should repeat your whole experiment from start to finish multiple times and on different days. ...
  20. Tips for Using FRET in Your Experiments

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    Blog Post
    ... paper, Sekar and Periasamy defined FRET as "a distance-dependent physical process by which energy is ...fluorophores used are in close vicinity. Thus, the distance between the two fluorophores and their orientation...less important when designing a biosensor, as the distance between the two fluorophores and their spatial...measurement methods as feasible when first beginning to establish the FRET methodology for a given experiment. You...
Showing: 661 - 680 of 1028 results