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We narrowed to 639 results for: des.2

Showing: 581 - 600 of 639 results
  1. Protocol - pLKO.1 – TRC Cloning Vector

    Type
    Protocol
    ...materials D.2 Screening for inserts E. Producing Lentiviral Particles E.1 Recommended materials E.2 Protocol...Published articles H.2 Web resources I. Appendix I.1 Sequence of pLKO.1 TRC-Cloning Vector I.2 Recipes I.3 Warranty...VWR: #7177-48-2. Use at 100 μg/mL. Carbenicillin VWR: #80030-956. Use at 100 μg/mL. C.2 Annealing Oligos...oligo 5 μL Reverse oligo 5 μL 10x NEB buffer 2 35 μL ddH 2 O Incubate for 4 minutes at 95°C in a PCR machine...buffer 1 1 μL AgeI add ddH 2 O to bring to 50 μL final volume Incubate at 37°C for 2 hours. Purify with Qiaquick...buffer for EcoRI 1 μL EcoRI 14 μL ddH 2 O Incubate at 37°C for 2 hours. Run digested DNA on 0.8% low melting... For a standard T4 ligation, mix: 2 μL annealed oligo from step C.2 20 ng digested pLKO.1 TRC-cloning ...
  2. Affinity Purification of Recombinant Antibodies with Protein A or Protein G

    Type
    Protocol
    ...phosphate monobasic monohydrate (NaH 2 PO 4 ∙H 2 O), pH 7.0 138 g NaH 2 PO 4 ∙H 2 O 1 L deionized water Adjust...sodium phosphate dibasic (NaH 2 PO 4 ), pH 7.0 142 g of NaH 2 PO 4 ∙H 2 O 1 L deionized water Adjust pH...monobasic monohydrate (NaH 2 PO 4 ∙H 2 O) 610 mL of sterile sodium phosphate dibasic (NaH 2 PO 4 ) Store up to...recombinant antibody. Section 2: Buffer exchange Choose Option 1 or Option 2 based on the concentration ... mL , then divide it into 2 columns. Twist off the 10 mL Zeba Spin Desalting Column’s bottom closure and...antibodies. Workflow Timeline Day 1: Purify antibody Day 2 or later: Buffer exchange Equipment Class II, Type...conical tubes NanoDrop spectrophotometer 37 °C, 5% CO 2 incubator with shaking platform set to 120 rpm 37 ...
  3. AAV Production in HEK293 Cells

    Type
    Protocol
    ...430825, 175 cm 2 Cellstack 5, Corning 3319, 3180 cm 2 Cellstack 2, Corning 3269, 1272 cm 2 Heat-inactivated...: 50 mM Tris HCl, 150 mM NaCl, 2 mM MgCl 2 Add the following to the 2 L sterile bottle: 1836 mL deionized... solution can be stored at 4 °C for up to 2 months. After 2 months, discard the tube and thaw a new working... mL of PBS. Aspirate PBS and add 2 mL of 0.05% Trypsin/EDTA. Wait ~2 min. Neutralize trypsin by adding...0.05% Trypsin/EDTA. Wait ~2-3 minutes for cells to detach. Gently tap the sides of the CS2 to help detach...Cell-Stack (CS5) (Link opens in a new window) (3,180 cm 2 - the same surface area as 21 x T-175 flasks). Cell...flasks. Workflow Timeline Day 0: Seed cells in CS2 Day 2: Seed cells in CS5 Day 3 (am): Transfect cells Day...
  4. CRISPR 101: Any Base Transversion Editors

    Type
    Blog Post
    ...of concept for further development. Figure 2: Mechanisms of deaminase-based adenine transversion...an abasic site. Like in most other base editor designs, the Cas9 nicks the non-edited strand to encourage...
  5. Transferable Skills Guide: Conflict Resolution

    Type
    Blog Post
    ...become a valuable asset yourself.     Fig 2: A diagram of the Thomas-Kilmann Conflict Model, courtesy...even better. The Thomas Kilmann Conflict Model describes 5 basic approaches to conflict resolution based...
  6. Quick Guide to Near-Infrared Fluorescent Proteins

    Type
    Blog Post
    ... iRFP713, % Oligomeric state Photo-stabilityc, t1/2, s pKa Brightness in HeLa cells vs. iRFP713, % d ...Biol 24, 758-766 e753 (2017). Baloban, M. et al. Designing brighter near-infrared fluorescent proteins: insights...
  7. Five Popular Model Organisms

    Type
    Blog Post
    ...variety of environmental conditions, and double every 2 hours. Yeast are also the first eukaryotic genome ...difficult and time consuming. GAL4/UAS was first described in 1993 by Norbert Perrimon’s lab and has been...
  8. AAV Titration by qPCR Using SYBR Green Technology

    Type
    Protocol
    ... 10 90 2 x 10 8 10 of 2 x 10 8 dilution 90 2 x 10 7 10 of 2 x 10 7 dilution 90 2 x 10 6 10 of 2 x 10 6...6 dilution 90 2 x 10 5 10 of 2 x 10 5 dilution 90 2 x 10 4 10 of 2 x 10 4 dilution 90 2 x 10 3 Pro-Tip...molecules/μL To obtain a solution at 2 x 10 9 molecules/μL: 1.59 x 10 11 / 2 x 10 9 = 79.8X dilution ...your standard curve plasmid (2 x 10 9 stock made in step #1): Volume of 2 x 10 9 stock or previous dilution...stock 45 uL 10X 10X Dilution 2 5 uL Dil. 1 95 uL 20X 200X Dilution 3 20 uL Dil. 2 80 uL 5X 1000X Dilution ...time required: ~3 h Workflow Timeline Plate set-up: 2 h qPCR run: 1.5 h Data analysis: 30 min Equipment ...single channel pipette 1–10 µL multichannel pipette 2–50 µL multichannel pipette 20–200 µL multichannel ...
  9. Personal Protective Equipment (PPE) for BSL-1 and BSL-2 Labs

    Type
    Protocol
    ...protocol provides information for both biosafety level 1 (BSL-1) and biosafety level 2 (BSL-2). The BSL...potential accidents such as spills. BSL-2 is different because it includes labs that work with agents associated...associated with diseases in healthy humans. BSL-2 includes all of the precautions needed in BSL-1, however...BSL-1 and BSL-2 labs. Protocols... Protocols Personal Protective Equipment (PPE) for BSL-1 and BSL-2 Labs Personal ...Personal Protective Equipment (PPE) for BSL-1 and BSL-2 Labs Intro to the Lab Bench Check out more protocols ...and/or face shields can be used as needed. For BSL-2 work always wear glasses/goggles in addition to the...
  10. General Transfection

    Type
    Protocol
    ... solution can be stored at 4 °C for up to 2 months. After 2 months, discard the tube and thaw a new working... transfected using 1:1, 1:2, 1:3 and 1:6 µg of pRosetta :µg of PEI. The 1:2 and 1:3 ratios provided high... for viral production) Day 1: Transfect Cells Day 2 (am): 18 h post transfection - Remove media, replace...Biological Safety Cabinet 0.5–10 µL single channel pipette 2–20 µL single channel pipette 20–200 µL single channel... 200–1000 µL single channel pipette Ice bucket CO 2 incubator Pipet controller Hazardous waste container... use. Thawed aliquots should be discarded after 1–2 months. 1 mg/mL polyethylenimine, linear MW 25,000...times a week: Monday: Plate 1x10 6 cells in a 75 cm 2 flask in a volume of 15 mL. Wednesday: Plate 1x10 ...
  11. Hot Plasmids: Summer 2024

    Type
    Blog Post
    ... from damage (Abe & Lim, 2024).    Figure 2: A) When proteins (blue) interact with the air-water... A) Schematic of workflow. B) Detail of spacer peptides (3HB: 11-nm 3-helix bundle; SAH: 60-nm single ...cryo-EM samples from damage at the AWI. Plus, tardigrades!  Find RvLEAMshort here!    Abe, K. M., & Lim...
  12. Lentivirus ddPCR Titration

    Type
    Protocol
    ...Activation 95 10 2 1 Denaturation 94 0.5 2 40 Annealing/Extension 60 1 2 40 Enzyme Deactivation 98 10 2 1 Hold ...diploid cells, thus the reason for multiplying by 2. $$V = 2*{copies\ RRE \over copies\ RPP30}$$ Use the viruses...diluted 2-fold serially, the concentration of RRE positive droplets should decrease by a factor of 2 across...Lentivirus is generally considered biosafety level 2+. Please ensure that you are in compliance with your...channel pipette 200–1000 µL single channel pipette 2–50 µL multichannel pipette 20–200 µL multichannel ...Detach cells by incubating with 200 µL TrypLE for 1–2 min. Resuspend cells in 500 µL DMEM complete and transfer... DG8 cartridge into the cartridge holder. Using a 2–50 µL multichannel pipet, load 20 µL of the reaction...
  13. Lentivirus Production

    Type
    Protocol
    ... solution can be stored at 4 °C for up to 2 months. After 2 months, discard the tube and thaw a new working...μg total DNA to μg PEI ratios of 1:1, 1:2, 1:3 and 1:6. The 1:2 and 1:3 total DNA:PEI μg ratios provided...packaging cells Day 1 (pm): Transfect packaging cells Day 2 (am): 18 h post-transfection. Remove media, replace...Biological Safety Cabinet 0.5–10 µL single channel pipette 2–20 µL single channel pipette 20–200 µL single channel... 200–1000 µL single channel pipette Ice bucket CO 2 incubator Pipet controller Hazardous waste container...culture plates. Incubate the cells at 37 °C, 5% CO 2 for ~20 h. Prepare a mixture of the three transfection...plasmid using a variety of ratios. Check the cells 1-2 days after transfection to determine what ratio gives...
  14. 9 tips for a successful postdoctoral experience

    Type
    Blog Post
    ...ask new and interesting questions in your own lab. 2. Seek multiple mentors during your postdoc At the ...for and how can you do it well? Below, I briefly describe some tips for a successful postdoc fellowship....typically writes the grants that fund your research, guides the research directions of the lab, gives you constructive...Thesis committee members provide expertise in designing and interpreting experiments, as well as career... there a tractable question or are you simply describing a phenomenon? Exploration can be important, but...presentations benefit from practice. If you simply recycle slides from the last time you gave a presentation to a...story I can tell with my data?  Can I make better slides that more effectively tell a story? Generally,...
  15. AAV ddPCR Titration

    Type
    Protocol
    ... 95 10 2 1 Denaturation 95 0.5 2 50 Annealing/Extension 60 1 2 50 Signal Stabilization 98 10 2 1 Hold ...should decrease by a factor of 2 across the dilutions. In the example below, 2-fold serial dilutions of a ... considered biosafety level 1 but may require BSL-2 handling depending on the insert. Please ensure that...single channel pipette 1–10 µL multichannel pipette 2–50 µL multichannel pipette 20–200 µL multichannel ...20X): 5 µL in 95 µL 1X PCR buffer (1:20) Dilution 2 (20X): 5 µL in 95 µL 1X PCR buffer (1:400) Dilution... DG8 cartridge into the cartridge holder. Using a 2–50 µL multichannel pipet, load 20 µL of the reaction...Hold 4 ∞ 2 1 After PCR is complete, transfer the plate to the Droplet Reader. Open the QuantaSoft software...
  16. Western Blot

    Type
    Protocol
    ...surface of the iBlot 2 Gel Transfer Device. Close the lid of the device. Select the desired method and make...transfer, block, incubate with primary antibody Day 2: Incubate with secondary antibody Video Watch this... Microcentrifuge 0.5–10 µL single channel pipette 2–20 µL single channel pipette 20–200 µL single channel...Heat block Mini gel tank chamber Power supply iBlot 2 Gel Transfer Device Roller Spatula Platform shaker...running buffer Prestained protein ladder Ethanol iBlot 2 PVDF Mini Stack, Thermo Fisher IB24002 20X TBS Tween...immediately or store at -80 °C until ready to use. Section 2: Determine the total protein concentration and prepare...in deionized water. To prepare 20% ethanol, dilute 2 mL of ethanol into 8 mL of deionized water and mix...
  17. Finding Your Perfect Job After University

    Type
    Blog Post
    ...experience in cancer research After graduating with a 2:1 BSc in Molecular Biology (roughly a B average in...every item I tested was constantly tracked with barcodes and spreadsheets. It was great to be in the lab...industry positions. There were, however, some downsides to working in a large commercial company. In my...aspects of the company and gave me the freedom to design new projects and grow in the role. I understand... job different every day. I love the freedom to design and develop my own projects, but working remotely...
  18. Antibodies 101: Introduction to Antibodies

    Type
    Blog Post
    ...Single-chain variable fragment (ScFv) Figure 2: Comparison between the IgG antibody and scFv. ...been infected with a microbe, to trigger immune cascades that clear these infections. Anything that generates...immune response and initiates different immune cascades. In the research setting, antibodies of different...antibody, which recognizes the primary antibody and provides the method of detection. You’ll also want to use...used for. Addgene’s Antibody Plasmid Collection includes plasmids that express antibodies, nanobodies, ...
  19. AAV Purification by Iodixanol Gradient Ultracentrifugation

    Type
    Protocol
    ...purification. Workflow Timeline Day 1: Purify Day 2: Buffer exchange and concentration Note: Both steps...7.4 1X PBS-MK buffer 100X Poloxamer 188 NaCl MgCl 2 KCl Centrifugal filter units (MWCO 100 kDa) Reagent...PBS-MK buffer Dissolve 5.84 g of NaCl, 26.3 mg of MgCl 2 and 14.91 mg of KCl in 1× PBS in a final volume of...at 4 °C. 1X PBS-MK buffer Dissolve 26.3 mg of MgCl 2 , and 14.91 mg of KCl in 1× PBS in a final volume ...(C) (formulation buffer) Add 5 mL of Buffer B and 2 mL of 5 M NaCl to 43 mL PBS Procedure Preparation ...need more time, you can alternatively centrifuge for 2 h at 200,000 x g at 18 °C. Carefully take the QuickSeal...interface of the 60% and 40% gradient (see Figure 2) with an 18 ga needle. Place the first microcentrifuge...
  20. Antibody Validation Using the Indirect ELISA Method

    Type
    Protocol
    ... Anti-Desmin [D7]. Plates were incubated with HRP-linked anti-Human IgG secondary antibody for 2 hours...vapors. Workflow Timeline Day 1: Antigen Coating Day 2: Blocking Day 3: Primary antibody incubation Day 4...with 96-well plates 1–10 µL single channel pipette 2–20 µL single channel pipette 20–200 µL single channel...serial dilutions of the purified antigen as follows: 2 ng/µL : Add 100 µL of 20 ng/µL stock into 900 µL PBS...microfuge tube and vortex. 1 ng/µL : Add 450 µL of 2 ng/µL stock into 450 uL PBS in a microfuge tube and...37 °C for 30 min , or overnight at 4 °C . Section 2: Block the plate Prepare the wash buffer (0.05% Tween...incubate on a microplate shaker set to 400 rpm for 2 h at room temperature or overnight at 4 °C . Section...
Showing: 581 - 600 of 639 results