Immunogen: Synthetic 20 amino acid peptide from 2nd extracellular domain of human Adenosine A1 Receptor. Percent identity with other species by BLAST analysis: Human, Orangutan, Monkey (100%); Gibbon, Marmoset, Mouse, Rat, Hamster, Elephant, Dog, Bat, Horse, Rabbit, Guinea pig (95%); Panda, Pig (90%); Bovine (85%).