The 28-14-8 antibody reacts with the α3 domain of the H-2D[b] MHC class I alloantigen. The antibody binds to H-2D[b] in the presence or absence of the β2 microglobulin chain. It cross-reacts with the α3 domain of H-2L[d], but not with K[d] or D[d], and with H-2D[q] and/or L[q]. Reactivity with haplotypes k, f, p, r, and s has not been observed. mAb 28-14-8 has been shown to block H-2L[d]- specific and H- 2L[d]-restricted antigen-specific lysis of target cells by cytotoxic T lymphocytes (CTL), but it does not block recognition of H-2L[d] positive target cells by Ly-6G2-positive NK cells.
This antibody is conjugated to BD Horizon™ BV605 which is part of the BD Horizon Brilliant™ Violet family of dyes. With an Ex Max of 407-nm and Em Max of 602-nm, BD Horizon BV605 can be excited by a violet laser and detected with a standard 610/20-nm filter set. BD Horizon BV605 is a tandem fluorochrome of BD Horizon BV421 and an acceptor dye with an Em max at 605-nm. Due to the excitation of the acceptor dye by the green (532 nm) and yellow-green (561 nm) lasers, there will be significant spillover into the PE and BD Horizon PE-CF594 detectors off the green or yellow-green lasers. BD Horizon BV605 conjugates are very bright, often exhibiting brightness equivalent to PE conjugates and can be used as a third color off of the violet laser.