EasySep® HLA Whole Blood B Cell Positive Selection Kit

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Immunomagnetic Positive Selection Kit

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  • EasySep® box
  • Box top label for EasySep HLA Whole Blood B Cell Positive Selection Kit For labeling 60 mL of blood
EasySep® box
The EasySep® HLA Whole Blood B Cell Positive Selection Kit is designed to isolate B cells from fresh whole blood by positive selection. Desired cells are targeted with Tetrameric Antibody Complexes recognizing CD19, CD20 and dextran-coated magnetic particles. Labeled cells are separated using an EasySep® magnet without the use of columns. Cells of interest remain in the tube while unwanted cells are poured off. The CD19 antigen is present on mature B cells and B cell progenitors, but is lost upon maturation to plasma cells. The antigen CD20 is expressed on all stages of B cell development except on pro B cells or plasma cells.
Product Name Description Catalog # Size Price Quantity
EasySep® HLA Whole Blood B Cell Positive Selection Kit Immunomagnetic positive selection of human B cells from whole blood for HLA analysis 18184HLA For labeling 60 mL whole blood 492.00 USD      
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RoboSep® HLA Whole Blood B Cell Positive Selection Kit with Filter Tips EasySep® kit with RoboSep® buffer and RoboSep® filter tips 18184HLARF For labeling 60 mL whole blood 523.00 USD      
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Recommended for:
The isolation of B cells from whole blood by positive selection for HLA analysis
Components:
• EasySep® HLA Whole Blood B Cell Positive Selection Cocktail, 3 x 1.0 mL
• EasySep® Whole Blood Magnetic Particles, 3 x 1.0 mL
• EasySep® RBC Lysis Buffer 10X Concentrate, 10 mL
Intended Use Statement: For Research Use Only. Not for Therapeutic or Diagnostic Use.
Equipment Required:
• “The Big Easy” EasySep® Magnet (Catalog #18001), or
• RoboSep® (Catalog #20000)
Product Type: Cell isolation products
Area of Interest: Hematologic malignancies, HLA
Cell Type: B cells
Popular Product Line: EasySep
Species: Human

Procedures and instruction manuals:

Educational resources:

FAQS:


  • HOW EASYSEP™ WORKS

    • Q. CAN EASYSEP™ BE USED FOR EITHER POSITIVE OR NEGATIVE SELECTION?
      A. Yes. The EasySep™ kits use either a negative selection approach by targeting and removing unwanted cells or a positive selection approach targeting desired cells. Depletion kits are also available for the removal of cells with a specific undesired marker (e.g. GlyA).
    • Q. HOW DOES THE SEPARATION WORK?
      A. Magnetic particles are crosslinked to cells using Tetrameric Antibody Complexes (TAC). When placed in the EasySep™ Magnet, labeled cells migrate to the wall of the tube. The unlabeled cells are then poured off into a separate fraction.
    • Q. WHICH COLUMNS DO I USE?
      A. The EasySep™ procedure is column-free. That's right - no columns!
    • Q. HOW CAN I ANALYZE THE PURITY OF MY ENRICHED SAMPLE?
      A. The Product Information Sheet provided with each EasySep™ kit contains detailed staining information.
    • Q. CAN EASYSEP™ SEPARATIONS BE AUTOMATED?
      A. Yes. RoboSep™, the fully automated cell separator, automates all EasySep™ labeling and cell separation steps.
    • Q. CAN EASYSEP™ BE USED TO ISOLATE RARE CELLS?
      A. Yes. We recommend a cell concentration of 2x108 cells/mL and a minimum working volume of 100 µL. Samples containing 2x107 cells or fewer should be suspended in 100 µL of buffer.

    EASYSEP™ MAGNETIC PARTICLES

    • Q. ARE THE EASYSEP™ MAGNETIC PARTICLES FACS-COMPATIBLE?
      A. Yes, the EasySep™ particles are flow cytometry-compatible, as they are very uniform in size and about 5000X smaller than other commercially available magnetic beads used with column-free systems.
    • Q. CAN THE EASYSEP™ MAGNETIC PARTICLES BE REMOVED AFTER ENRICHMENT?
      A. No, but due to the small size of these particles, they will not interfere with downstream applications.
    • Q. HOW DOES THE BINDING OF THE EASYSEP™ MAGNETIC PARTICLE AFFECT THE CELLS? IS THE FUNCTION OF POSITIVELY SELECTED CELLS ALTERED BY THE BOUND PARTICLES?
      A. Hundreds of publications have used cells selected with EasySep™ positive selection kits for functional studies. Our in-house experiments also confirm that selected cells are not functionally altered by the EasySep™ magnetic particles.

      If particle binding is a key concern, we offer two options for negative selection. The EasySep™ negative selection kits can isolate untouched cells with comparable purities, while RosetteSep™ can isolate untouched cells directly from whole blood without using particles or magnets.

    MODIFYING THE EASYSEP™ PROTOCOL

    • Q. CAN I ALTER THE SEPARATION TIME IN THE MAGNET?
      A. Yes; however, this may impact the kit's performance. The provided EasySep™ protocols have already been optimized to balance purity, recovery and time spent on the isolation.
    • Q. FOR POSITIVE SELECTION, CAN I PERFORM MORE THAN 3 SEPARATIONS TO INCREASE PURITY?
      A. Yes, the purity of targeted cells will increase with additional rounds of separations; however, cell recovery will decrease.

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