The 83103 monoclonal antibody specifically binds to CD193, which is also known as, C-C chemokine receptor type 3 (CCR3). CD193 is a chemokine receptor for CCL11/eotaxin, CCL24/eotaxin-2, CCL26/eotaxin-3, CCL5/RANTES, CCL7/MCP-3, CCL8/MCP-2, CCL14/MCP-4, CCL15/HCC-2 and CCL3/MIP-1a. CD193 is reportedly expressed on eosinophils, mast cells and Th2 cells. It plays an important role in eosinophil recruitment to the skin and the lung and in the development of airway hyperresponsiveness.
The antibody was conjugated to BD Horizon™ BB700, which is part of the BD Horizon Brilliant™ Blue family of dyes. It is a polymer-based tandem dye developed exclusively by BD Biosciences. With an excitation max of 485 nm and an emission max of 693 nm, BD Horizon BB700 can be excited by the 488 nm laser and detected in a standard PerCP-Cy™5.5 set (eg, 695/40-nm filter). This dye provides a much brighter alternative to PerCP-Cy5.5 with less cross laser excitation off the 405 nm and 355 nm lasers.