The SN2 monoclonal antibody specifically recognizes a 37-42 kDa membrane glycoprotein expressed on a subset of peripheral lymphocytes, monocytes, immature thymocytes and on most platelets. CD165, also known as gp37 or AD2, is expressed at low levels on most thymocytes and thymic epithelial cells. CD165 has been detected on islet cells of the pancreas, Bowman's capsule of the kidney and on central nervous system neurons. SN2 antigen has been reported to be identical, or very similar, to the T-cell acute lymphoblastic leukemia antigen, TALLA-1. CD165 has been reported to play a role in the adhesion between thymocytes and thymic epithelial cells during development.
The antibody was conjugated to BD Horizon™ BV421 which is part of the BD Horizon Brilliant™ Violet family of dyes. With an Ex Max of 407-nm and Em Max at 421-nm, BD Horizon BV421 can be excited by the violet laser and detected in the standard Pacific Blue™ filter set (eg, 450/50-nm filter). BD Horizon BV421 conjugates are very bright, often exhibiting a 10 fold improvement in brightness compared to Pacific Blue conjugates.