Immunogen: Synthetic peptide VEGVVCKQVFKKVQ from the C-terminus of human RBP1 (NP_002890.1). Percent identity by BLAST analysis: Human, Gorilla, Gibbon, Monkey, Marmoset (100%); Elephant, Bovine, Dog, Bat, Rabbit, Platypus (93%); Horse, Pig, Opossum (86%).