Immunogen: Synthetic peptide TNSSCQCPHILPHQD from an internal region of human SFRP4 (NP_003005.2). Percent identity by BLAST analysis: Human, Gorilla, Gibbon, Monkey, Marmoset, Mouse, Rat, Hamster, Panda, Dog, Bat, Bovine, Horse, Rabbit, Pig, Opossum (100%); Platypus (93%).