Immunogen: Synthetic 17 amino acid peptide from 2nd extracellular domain of human RXFP2. Percent identity with other species by BLAST analysis: Human, Gorilla (100%); Gibbon, Marmoset, Elephant, Panda, Bat, Horse (94%); Monkey, Dog, Pig (88%); Bovine, Rabbit, Platypus, Xenopus (82%).