BD, 558331, BD Pharmingen™ Mouse B Lymphocyte Subset Antibody Cocktail, with Isotype Control; PE-Cy™7 CD45R/B220, PE CD23 (FcεRII), and FITC sIgM

Reactivity: Mouse (QC Testing)
Application: Flow cytometry (Routinely Tested)
Regulatory Status: RUO
RRID: AB_397075
Description: Description The Mouse B Lymphocyte Subset Antibody Cocktail is a three-color reagent designed to identify major subsets of B lymphocytes by direct immunofluorescent staining with flow cytometric analysis. The RA3-6B2 antibody recognizes an epitope of the extracellular domain of CD45 that is primarily expressed, at developmentally regulated levels, on B lymphocytes at all stages from pro-B through mature, activated, antibody-secreting, and memory B cells. Although CD45R/B220 has been considered to be a defining antigen of the B-cell lineage, lytically active NK cells, some activated or apoptotic T cells, and some non-B-lineage hematopoietic progenitors have been reported to express CD45R/B220. The B3B4 antibody recognizes CD23, the low-affinity IgE Fc receptor that is expressed on mature resting conventional B cells, but not on B-1 cells (CD5+ B lymphocytes), T lymphocytes, or mast cells. The II/41 antibody recognizes the surface IgM (sIgM), specifically immunoglobulin chain, which is a component of the antigen receptor complex on immature and mature B lymphocytes, including plasma cells. The three antibodies have been titrated and pre-diluted, mixed together, and formulated for optimal staining performance. The Mouse B Lymphocyte Subset Isotype Control contains equivalent concentrations of fluorochrome- and isotype-matched negative-control immunoglobulin. The use of three different fluorochromes for the labelling of the three different antibodies permits the recognition of each of the three antigens on each cell in a sample. The levels of expression of the three antigens distinguish the major subpopulations of developing and peripheral B lymphocytes. Additional fluorochrome-labelled reagents may be combined with the Mouse B Lymphocyte Subset Antibody Cocktail to further characterize B-cell subpopulations.
Preparation And Storage: Preparation And Storage The monoclonal antibody was purified from tissue culture supernatant or ascites by affinity chromatography. The antibody was conjugated with PE-Cy7 under optimum conditions, and unconjugated antibody and free PE-Cy7 were removed. The antibody was conjugated with R-PE under optimum conditions, and unconjugated antibody and free PE were removed. The antibody was conjugated with FITC under optimum conditions, and unreacted FITC was removed. Store undiluted at 4°C and protected from prolonged exposure to light. Do not freeze.