CD20 Antibody [SPM618]

Cancer, Immunology, Signal Transduction

Flow Cytometry: 0.5-1 ug/million cells

IF: 0.5-1 ug/ml

Immunohistology (FFPE): 0.5-1 ug/ml for 30 minutes at RT (1)

Prediluted format : incubate for 30 min at RT (2)

The concentration stated for each application is a general starting point. Variations in protocols, secondaries and substrates may require the anti-CD20 antibody to be titered up or down for optimal performance.

1. Staining of formalin-fixed tissues requires boiling tissue sections in 10mM citrate buffer, pH 6.0, for 10-20 min followed by cooling at RT for 20 minutes.
2. The prediluted format is supplied in a dropper bottle and is optimized for use in IHC. After epitope retrieval step (if required), drip mAb solution onto the tissue section and incubate at RT for 30 min.

Monoclonal

IgG2a, kappa

PBS with 0.1 mg/ml BSA and 0.05% sodium azide

Aliquot and Store at 2-8˚ C. Avoid freez-thaw cycles.

None

931

MS4A1

Homo sapiens

This antibody recognizes a protein of 33-37kDa, identified as CD20. The epitope is similar to or identical to that recognized by other CD20 antibodies including Leu-16 and B1. This antibody can be used for immunophenotyping of leukemia and malignant cells, B lymphocyte detection in peripheral blood, Bcell 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. It 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.