PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 9101552-1 1997 The effect of dietary carotenoid-rich extracts of carrots, tomatoes, and orange juice on rat liver gamma-glutamyl transpeptidase-positive preneoplastic foci induced by aflatoxin B1 was investigated. Carotenoids 22-32 gamma-glutamyltransferase 1 Rattus norvegicus 99-128