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The M1/70 antibody reacts with the 170kDa α[M] chain of Mac-1 (CD11b/CD18, α[M]β[2] integrin), also known as complement receptor 3 (CR3), which mediates adhesion to C3bi and ICAM-1 (CD54). Mac-1 is expressed at varying levels on granulocytes, macrophages, myeloid-derived dendritic cells, natural killer cells, microglia, and B-1 cells. Mac-1 expression is rapidly up-regulated on neutrophils after activation, in the same time period that CD62L (L-selectin) is shed from the cell surface. M1/70 antibody reportedly blocks cell adherence and C3bi binding, but it does not block cell-mediated lysis. Cross-reaction of mAb M1/70 with CD11b on human monocytes, polymorphonuclear leukocytes, and NK cells has been reported. This antibody is routinely tested by flow cytometric analysis (≤0.25 μg/million cells).Host Species: RatClone: M1/70Isotype: IgG2b, κSpecies Reactivity: MouseImmunogen: Mouse splenic CellsFlow Cytometry
