PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 6323433-4 1984 This hypothesis was tested by measuring the catalytic activity of 12 different iron chelates using hypoxanthine and xanthine oxidase to generate O-.2. Hypoxanthine 99-111 immunoglobulin kappa variable 1D-39 Homo sapiens 145-149