The reagent is provided in aqueous buffered solution containing protein stabilizer, and ≤0.09% sodium azide (NaN3)
CD45RB, clone HB220, is a mAb intended for RUO in the identification of cells that express CD45RB. This reagent is effective for direct IF staining of mouse sample for FCM analysis using ≤1 µg/106 cells.
Store in the dark at 2-8 ºC
CD45RB monoclonal antibody specifically recognizes an exon B-dependent epitope of CD45 lycoprotein, which is found at high density on peripheral B cells, T cytotoxic/suppressor cells, subset of T helper cells, and most thymocytes and at low density on macrophages and dendritic cells.The level of CD45RBB expression appears to decrease as T lymph ocytes progress from naive to memory cells. In addition, subpopulations of CD4+ T cells which express high and low levels of CD45RBB have different cytokine secretion profiles and mediate distinct immunological functions. CD25+ D4+ regulatory T (Treg) lymph ocytes which control intestinal inflammation and autoimmunity express low levels of CD45RBB. CD45 is a member of the Protein Tyrosine Phosphatase (PTP) family: Its intracellular (COOH-terminal) region contains two PTP catalytic domains, and the extracellular region is highly variable due to alternative splicing of exons (designated A, B, and C, respectively), plus differing levels of glycosylation. The CD45 isoforms detected in the mouse are cell type-, maturation-, and activation state-specific. The CD45 isoforms play complex roles in T-cell and B-cell antigen receptor signal transduction.
Ptprc; CD45R; CD45; LCA; Leukocyte common antigen; Ly-5; Lyt-4