title: Aging as a confounding factor in carcinogenicity bioassays.
mesh_terms: D000375:Aging; D000818:Animals; D001681:Biological Assay; D002273:Carcinogens / Q000032:analysis*; D004353:Drug Evaluation, Preclinical; D051379:Mice; D008807:Mice, Inbred BALB C; D009374:Neoplasms, Experimental / Q000139:chemically induced; D012107:Research Design
chemical_list: D002273:Carcinogens