Anti-lymphocyte-activation gene 3 antibodies enable researchers to detect and measure the lymphocyte-activation gene 3 antigen in biological samples. This target is a reported synonym of the LAG3 gene, which encodes lymphocyte activating 3. This protein is known to function in adaptive immune responses and receptor-mediated signaling pathways, among other biological roles. The human version of lymphocyte-activation gene 3 has a canonical amino acid length of 525 residues and a protein mass of 57.4 kilodaltons, although 2 isoforms have been identified. It is reported to be localized in the cell membrane and is secreted of cells. Other names for this target antigen include CD223, lymphocyte activation gene 3 protein, and lymphocyte-activation gene 3. Over 390 citations in the literature describe the use of lymphocyte-activation gene 3 antibodies in research. These antibodies are most commonly used in Flow Cytometry experiments, among other applications.