The RR8-1 monoclonal antibody specifically recognizes the Vα 11.1 and Vα 11.2, but not Vα 11.3 T-cell Receptors (TCR) of mice having the b (e.g., C57BL) and d (e.g., DBA/1, DBA/2, NZW) haplotypes of Tcra gene complex. RR8-1 antibody does not react with strains having the a (e.g., A, AKR, BALB/c, CBA, C3H/He) or c (e.g., NZB, SJL, SWR, NOD) Tcra haplotypes. Plate-bound RR8-1 antibody activates Vα 11.1, 11.2[b,d] TCR-bearing T lymphocytes.
The antibody was conjugated to BD Horizon BUV615 which is part of the BD Horizon Brilliant™ Ultraviolet family of dyes. This dye is a tandem fluorochrome with an Ex Max near 350 nm and an Em Max near 615 nm. BD Horizon Brilliant BUV615 can be excited by the ultraviolet laser (355 nm) and detected with a 610/20 filter and a 595 nm LP. Due to the excitation of the acceptor dye by the blue/yellow-green laser line, there may be significant spillover into channels detecting PE-CF594 like emissions (eg, 610/20-nm filter).