Immunogen: Synthetic 16 amino acid peptide from 3rd cytoplasmic domain of human DRD2. Percent identity with other species by BLAST analysis: Human, Chimpanzee, Gorilla, Ferret, Bat, Bovine, Dog, Elephant, Panda, Horse, Rabbit (100%); Gibbon, Monkey, Pig (94%); Marmoset (81%).