Anti-Insulin antibodies are directed against the protein encoded by the gene INS in humans. The Insulin protein has an expected mass of 12 kDa, but there are 2 reported isoforms. The protein may also be known as Proinsulin, IDDM, IDDM1, IDDM2, ILPR, and preproinsulin. Variants of this antigen may also be found in other species, including canine, porcine and monkey. Antibodies to the Insulin antigen may be useful for studying hormones and growth factor signaling. Anti-Insulin antibodies are directed against the protein encoded by the gene INS in humans. The Insulin protein has an expected mass of 12 kDa, but there are 2 reported isoforms. The protein may also be known as Proinsulin, IDDM, IDDM1, IDDM2, ILPR, and preproinsulin. Variants of this antigen may also be found in other species, including canine, porcine and monkey. Antibodies to the Insulin antigen may be useful for studying hormones and growth factor signaling.