title: Cytophotometric evidence of change in nucleolus associated chromatin during the initial stages of skin carcinogenesis by 3,4-benzpyrene.
mesh_terms: D000818:Animals; D001580:Benzopyrenes / Q000494:pharmacology*; D002466:Cell Nucleolus / Q000187:drug effects*; D008722:Methods; D051379:Mice; D009374:Neoplasms, Experimental / Q000235:genetics; D012878:Skin Neoplasms / Q000235:genetics*
chemical_list: D001580:Benzopyrenes