Immunogen: Synthetic peptide C-PNATEASKPQGTT from an internal region of human SFRP1 (NP_003003.3). Percent identity by BLAST analysis: Human, Gorilla, Gibbon, Monkey, Marmoset, Rat, Elephant, Panda, Bat, Dog, Bovine, Horse (100%); Mouse, Rabbit, Pig (92%); Opossum (85%).