Immunogen: Synthetic 20 amino acid peptide from internal region of human MAPK3 / ERK1. Percent identity with other species by BLAST analysis: Human, Gorilla, Gibbon, Monkey, Marmoset (100%); Mouse, Rat, Bovine, Hamster, Elephant, Panda, Horse, Pig (95%); Dog, Rabbit, Opossum, Platypus (90%); Bat (85%).