Immunogen: Synthetic 16 amino acid peptide from 2nd cytoplasmic domain of human HRH3 / Histamine H3 Receptor. Percent identity with other species by BLAST analysis: Human, Gorilla, Gibbon, Monkey, Mouse, Rat, Hamster, Elephant, Bovine, Horse, Guinea pig (100%); Panda, Bat, Dog (94%); Opossum (81%).