Immunogen: Synthetic peptide corresponding to aa 475-490 (P475EFDLSRYGFGLMQPE490) of mouse Prostaglandin I Synthase (PGIS). Percent identity by BLAST analysis: Human, Gibbon, Monkey, Mouse, Rat, Hamster, Elephant, Panda, Dog, Bat, Bovine, Horse, Pig (100%); Opossum (88%); Platypus (81%).