Immunogen: Synthetic 15 amino acid peptide from 2nd extracellular domain of human 5HT2B Receptor. Percent identity with other species by BLAST analysis: Human, Chimpanzee, Gorilla, Orangutan, Gibbon, Monkey, Marmoset (100%); Bovine, Bat (93%); Mouse, Hamster, Panda, Horse, Rabbit, Pig (80%).