The OX-17 antibody reacts with a non-polymorphic determinant of rat MHC Class II antigen, I-E equivalent. RT1D is found on peripheral B lymphocytes, thymic cortical epithelial and medullary reticular cells, epithelial cells in the adult small intestine, macrophages and dendritic cells in the intestinal lamina propria and Peyer's patches, epithelial and dendritic cells in the kidney, and activated monocytes, but not on thymocyes, erythrocytes, peripheral T cells, or brain. Its expression is upregulated on large-vessel endothelia and a variety of epithelial and glandular cells in the gastrointestinal system of rats treated with IFN-γ.
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.