Immunogen: Synthetic peptide C-KLARGHTNGTKPLD from an internal region of human ARSB (NP_000037.2; NP_942002.1). Percent identity by BLAST analysis: Human, Gorilla, Gibbon, Marmoset (100%); Elephant (93%); Monkey, Bovine, Bat, Cat, Panda, Horse, Chicken (86%).