Immunogen: Synthetic 14 amino acid peptide from internal region of human ITGA4 / VLA-4. Percent identity with other species by BLAST analysis: Human (100%), Gorilla (100%), Gibbon (100%), Monkey (100%), Marmoset (100%), Mouse (100%), Rat (100%), Elephant (93%), Panda (93%), Dog (86%), Bat (86%), Bovine (86%), Rabbit (86%), Horse (86%), Pig (86%).