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™ BV650 which is part of the BD Horizon Brilliant™ Violet family of dyes. This dye is a tandem fluorochrome of BD Horizon BV421 with an Ex Max of 405-nm and an acceptor dye with an Em Max at 650-nm. BD Horizon BV650 can be excited by the violet laser and detected in a filter used to detect APC-like dyes (eg, 660/20-nm filter). Due to the excitation and emission characteristics of the acceptor dye, there will be spillover into the APC and Alexa Fluor® 700 detectors. However, the spillover can be corrected through compensation as with any other dye combination.