title: Dilemma in diagnostic tumor pathology.
mesh_terms: D000818:Animals; D002273:Carcinogens / Q000494:pharmacology; D009369:Neoplasms / Q000139:chemically induced / Q000145:classification / Q000175:diagnosis* / Q000473:pathology; D051381:Rats; D009626:Terminology as Topic
chemical_list: D002273:Carcinogens