The 16.1 monoclonal antibody recognizes the C57BL/6 mouse CD161a, CD161b, and CD161c (CD161a, b, c) cell surface molecules, which are also known as Natural killer cell receptor P1A (NKRP1A), NKRP1D, and NKRP1C, respectively. These cell surface molecules are expressed by natural killer (NK) cells and may play a role in NK cell functions. The 16.1 antibody does not crossreact with CD161f (NKRP1F). This antibody likely binds to CD161 molecules expressed by lymphoid cells from some other mouse strains.
The antibody was conjugated to BD Horizon™ BUV496 which is part of the BD Horizon Brilliant™ Ultraviolet family of dyes. This dye is a tandem fluorochrome of BD Horizon BUV395 with an Ex Max of 348-nm and an acceptor dye with an Em Max at 496-nm. BD Horizon BUV496 can be excited by the ultraviolet laser (355 nm) and detected with a 515/30 nm filter with a 450LP. Due to the excitation of the acceptor dye by other laser lines, there may be significant spillover into the channel detecting BD Horizon V500 or BV510 (eg, 525/40-nm filter). However, the spillover can be corrected through compensation as with any other dye combination.