Immunogen: Synthetic 19 amino acid peptide from 3rd cytoplasmic domain of human DRD2. Percent identity with other species by BLAST analysis: Human, Chimpanzee, Gorilla, Marmoset (100%); Gibbon, Monkey, Rabbit (95%); Dog, Bovine, Panda, Horse, Pig (89%); Mouse, Rat, Ferret, Bat, Hamster, Elephant (84%).