Immunogen: Synthetic 17 amino acid peptide from ligand-binding domain of human NR1D2. Percent identity with other species by BLAST analysis: Human, Gorilla, Gibbon, Monkey, Marmoset, Bovine, Dog, Bat, Panda, Horse, Rabbit, Opossum, Platypus (100%); Mouse, Rat, Elephant (94%); Chicken (82%).