Anti-CBD antibodies enable researchers to detect and measure the CBD antigen in biological samples. This target is a reported synonym of the OPN1MW gene, which encodes opsin 1, medium wave sensitive. This protein is known to function in GPCR signaling pathways and cell division, among other biological roles. The human version of CBD has a canonical amino acid length of 364 residues and a protein mass of 40.6 kilodaltons. It is reported to be localized in the cell membrane of cells. Other names for this target antigen include CBBM and COD5.