PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 6330372-2 1984 Enzymatic scavengers of hydrogen peroxide (H2O2) and superoxide anion (O-2), catalase and superoxide dismutase, were not effective in reversing the cardiac alterations induced by hypoxia. Superoxides 53-69 immunoglobulin kappa variable 1D-39 Homo sapiens 71-74