Immunogen: Synthetic 20 amino acid peptide from N-terminal extracellular domain of human 5HT2B Receptor. Percent identity with other species by BLAST analysis: Human, Chimpanzee, Gorilla, Orangutan, Monkey (100%); Marmoset, Bat (95%); Horse (90%); Dog, Panda (85%); Bovine, Rabbit (80%).