SIRP is a reported alias of the human protein 'signal regulatory protein alpha', encoded by the gene SIRPA. Anti-SIRP antibodies are available from several suppliers. The full protein is reported to be 504 amino acid residues in length. Based on antigen name, there may be canine, porcine, monkey, mouse and rat variants of this protein. See the antibody supplier page for important details, including specific immunogenicity and validated applications.