PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 8978742-5 1997 In the presence of H2O2 and Fe2+, the addition of TH increases the production of the highly reactive.OH radical, probably via a Fenton type of reaction. oh radical 101-111 tyrosine hydroxylase Homo sapiens 50-52