PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 8429245-1 1993 We had studied the histogenesis and p21 expression in ovarian tumor induced by 7,12-dimethylbenz(a)anthracene (DMBA). 7,12-dimethylbenz 79-96 KRAS proto-oncogene, GTPase Rattus norvegicus 36-39