PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 2912581-6 1989 Expression of the transfected cytochrome P1-450 gene was stable for 20-30 days in the presence of hygromycin B. Hygromycin B 98-110 cytochrome P450 family 1 subfamily A member 1 Homo sapiens 41-47