PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 12369889-11 2002 Historically, this strategy utilized CYP 2B1 to activate oxazaphosphorines. oxazaphosphorines 57-74 cytochrome P450 family 4 subfamily F member 3 Homo sapiens 37-40