The B1/35 monoclonal antibody specifically binds to CD248 which is also known as Endosialin, Tumor endothelial marker 1 (TEM1), and CD164 sialomucin-like 1 (CD164L1). CD248 is a heavily glycosylated, single-pass type I transmembrane protein. CD248 belongs to the Group XIV C-Type lectin family that includes CD93 and CD141/thrombomodulin. It is expressed on pericytes and stromal fibroblasts. Although the exact functions of CD248 remain to be determined, its expression is associated with angiogenesis and lymphoid tissue organization during development, as well as, with postnatal inflammation and tumor development and growth.
The antibody was conjugated to BD Horizon BUV615 which is part of the BD Horizon Brilliant™ Ultraviolet family of dyes. This dye is a tandem fluorochrome with an Ex Max near 350 nm and an Em Max near 615 nm. BD Horizon Brilliant BUV615 can be excited by the ultraviolet laser (355 nm) and detected with a 610/20 filter and a 595 nm LP. Due to the excitation of the acceptor dye by the blue/yellow-green laser line, there may be significant spillover into channels detecting PE-CF594 like emissions (eg, 610/20-nm filter).