Anti-CD20L antibodies enable researchers to detect and measure the CD20L antigen in biological samples. This target is a reported synonym of the MS4A3 gene, which encodes membrane spanning 4-domains A3. The human version of CD20L has a canonical amino acid length of 214 residues and a protein mass of 22.9 kilodaltons, although 3 isoforms have been identified. It is reported to be localized in the cytoplasm of cells and notably expressed in the bone marrow. This target antigen may also be known as HTM4.