Clone MY31 specifically recognizes the human form of the 220/135 kDa heavily glycosylated antigen, CD56, found on a subpopulation of peripheral blood large granular lymphocytes which demonstrate natural killer cell activity, but not on myeloid cells, erythrocytes or B cells. This clone also cross-reacts with a subset of peripheral blood lymphocytes of baboon, and both rhesus and cynomolgus macaque monkeys. The distribution on lymphocytes is similar to that observed with peripheral blood lymphocytes from normal human donors, with a subset of CD16+ cells co-expressing CD56. In contrast to what is observed with human peripheral blood cells, however, clone MY31 also reacts with a major subset of non-human primate CD14+ monocytes. Studies in rhesus macaque monkeys suggest that CD56 reacts with monocytes and not natural killer cells.
The antibody was conjugated to BD Horizon™ BUV395 which is part of the BD Horizon Brilliant™ Ultraviolet family of dyes. This dye has been exclusively developed by BD Biosciences to have minimal spillover into other detectors, making it an optimal choice for multicolor flow cytometry. With an Ex Max at 348 nm and an Em Max at 395 nm, BD Horizon BUV395 can be excited with a 355 nm laser and detected with a 379/28 filter.