PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 16337888-5 2006 These results demonstrate that vanadium in the +2, +3, and +4 valence states interacts prooxidatively with human neutrophils, competing effectively with MPO for hydrogen peroxide to promote formation of the highly toxic hydroxyl radical. Hydroxyl Radical 220-236 myeloperoxidase Homo sapiens 153-156