Anti-CD80 antibodies target the protein encoded by the gene 'CD80 molecule' in humans and may also be known as B71, B7, B7-1, B7.1, BB1, and T-lymphocyte activation antigen CD80. Structurally, the protein is reported to be 33 kilodaltons in mass. Based on gene name, canine, porcine, monkey, mouse, and rat orthologs may also be found.