The 19.2 monoclonal antibody specifically binds to CD206 which is also known as the macrophage mannose receptor (MMR) or C-type lectin domain family 13 member D (CLEC13D). CD206 is a type I transmembrane glycoprotein of approximately 162 kDa which binds to glycoconjugates containing mannose, fucose, or N-acetylglucosamine. These carbohydrates are present on the surface of many microorganisms and enable the macrophage to bind to microorganisms through the MMR and internalize them during the process of phagocytosis. CD206 is expressed on human macrophages, endothelial cells, and cultured dendritic cells. It is not detected on resting monocytes. Mannose receptor expression is upregulated on peripheral blood mononuclear cells following 3 day incubation with GM-CSF.
The antibody was conjugated to BD Horizon Red 718, which has been developed exclusively for BD Biosciences as a better alternative to Alexa Fluor® 700. BD Horizon Red 718 can be excited by the red laser (628 – 640 nm) and, with an Em Max around 718 nm, it can be detected using a 730/45 nm filter. Due to similar excitation and emission properties, we do not recommend using R718 in combination with APC-R700 or Alexa Fluor® 700.