title: Crude petroleum and selected fractions. Skin cancer bioassays.
mesh_terms: D000818:Animals; D001564:Benzo(a)pyrene; D001580:Benzopyrenes; D001681:Biological Assay; D008297:Male; D051379:Mice; D009374:Neoplasms, Experimental / Q000139:chemically induced; D010578:Petroleum / Q000032:analysis; D012878:Skin Neoplasms / Q000139:chemically induced*
chemical_list: D001580:Benzopyrenes; D010578:Petroleum; D001564:Benzo(a)pyrene