PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 2119910-6 1990 In total, 6 out of 35 liver tumours of male CF1 mice, two of them occurring after treatment with the tumour promoter phenobarbital solely, contained mutations at either the first or second base of codon 61 of the Ha-ras gene. Phenobarbital 117-130 Harvey rat sarcoma virus oncogene Mus musculus 213-219