The N6B6 monoclonal antibody specifically recognizes CD164. CD164 is a 80-90 kDa, mucin-like molecule present on CD34+ cells during the early stages of B cell, erythroid cell and myelomonocytic cell development. It is also expressed on epithelial cells, peripheral blood monocytes and weakly on lymphocytes. Mucin-like molecules are a new family of glycoproteins present in tissues of the hematopoietic system. They are highly glycosylated polypeptides, containing predominantly O-linked carbohydrate side chains. CD164 may reportedly play a role in hematopoiesis by facilitating the adhesion of CD34+ cells to bone marrow stroma.
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.