CXCR1 and CXCR2 are closely related receptors that recognize CXC chemokines that possess an E-L-R amino acid motif immediately adjacent to their CXC motif. CXCL8 (otherwise known as interleukin-8) and CXCL6 can both bind CXCR1 in humans, while all other ELR-positive chemokines, such as CXCL1 to CXCL7 bind only CXCR2. They are both expressed on the surface of neutrophils in mammals. Synonyms: Monoclonal CXCR1 antibody, Anti-CXCR1 antibody, cxcr1 antibody, il-8 receptor a antibody, il-8ra antibody, il8r1 antibody, interleukin-8 receptor a antibody, interleukin-8 receptor type a antibody, interleukin 8 receptor alpha antibody.