Immunogen: Synthetic 16 amino acid peptide from N-terminal extracellular domain of human CXCR4. Percent identity with other species by BLAST analysis: Human, Chimpanzee (100%); Gorilla, Orangutan, Gibbon, Baboon, Monkey, Tamarin (94%); Marmoset, Elephant, Rabbit (88%); Mouse, Rat (81%).