Description: This MR11-1 monoclonal antibody reacts with the mouse T cell receptor (TCR) V beta 12 chain. Composed of an alpha and beta chain, TCR specificity is typically determined by Va, Ja, Vb, Db, and Jb gene rearrangement. The MR11-1 antibody recognizes the V beta 12 chain on T cells from mouse strains with the b haplotype, including C57BL/6, B10, and C58/J. V beta 12+ T cells are absent in strains with the a (e.g., SJL) or c (e.g., RIII) haplotypes of the Tcrb gene complex. Finally, mouse strains expressing the minor lymphocyte stimulatory (Mls) antigens, such as BALB/c and C3H, express fewer V beta 12+ T cells.
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