APY, ATOPY, B-lymphocyte cell-surface antigen B1, Bp35, Fc epsilon receptor I beta chain, Fc Fragment of IgE high affinity I receptor for beta polypeptide, FCER1B, High affinity immunoglobulin epsilon receptor subunit beta, IgE Fc receptor subunit beta, IGEL, IGER, IGHER, LEU16, Leukocyte surface antigen Leu-16, Ly44, Membrane spanning 4 domains subfamily A member 2, Membrane-spanning 4-domains subfamily A member 1 (MS4A1)
Recognizes a protein of 33-37 kDa, identified as CD20 (Workshop V, Code CD20.12). B9E9 recognizes extracellular domain of CD20. The epitope is similar to or identical to that recognized by other CD20 antibodies including Leu-16 and B1. This MAb can be used for immunophenotyping of leukemia and malignant cells, B lymphocyte detection in peripheral blood, B cell localization in tissues and B lymphocyte purification by immunosorbent methods. CD20 is a non-Ig differentiation antigen of B-cells and its expression is restricted to normal and neoplastic B-cells, being absent from all other leukocytes and tissues. CD20 is expressed by pre B-cells and persists during all stages of B-cell maturation but is lost upon terminal differentiation into plasma cells. Protein passes through the membrane 4 times with both ends in cytoplasm and exposes one short and one longer loop to the external environment. CD20 is not glycosylated in resting B cells and its cytoplasmic domains are differentially phosphorylated upon activation. It acts as a calcium channel involved in B-cell activation and cell cycle progression. Primary antibodies are available purified, or with a selection of fluorescent CF Dyes and other labels. CF Dyes offer exceptional brightness and photostability. Note: Conjugates of blue fluorescent dyes like CF405S and CF405M are not recommended for detecting low abundance targets, because blue dyes have lower fluorescence and can give higher non-specific background than other dye colors.
Higher concentration may be required for direct detection using primary antibody conjugates than for indirect detection with secondary antibody|Immunofluorescence: 1-2 ug/mL|Flow cytometry 5 uL per test per one million cells in 0.1 mL, or 5 uL per 100 uL of whole blood|Optimal dilution for a specific application should be determined by user
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