Carcinogenicity TestsCarcinogensToxicity Tests, ChronicRats, Inbred F344Neoplasms, ExperimentalRodent DiseasesToxicologyMutagenicity TestsEthyl ChlorideAcrylonitrileOxymetholoneAnimals, LaboratoryGenes, rasHyperplasiaPapillomaLiver Neoplasms, ExperimentalToxicity TestsMethylnitrosoureaDose-Response Relationship, DrugMice, Inbred StrainsHemangiosarcomaBody WeightAdministration, CutaneousNasal CavityCarcinogens, EnvironmentalNeoplasmsAdenomaAdministration, OralMice, TransgenicLiverDrug-Related Side Effects and Adverse ReactionsMutagensKidney TubulesResearch DesignSpecies SpecificityTime FactorsOrgan SizeRisk AssessmentAnimal Testing AlternativesRats, Sprague-DawleyNitrosaminesNose NeoplasmsDNA AdductsRespiratory Tract NeoplasmsOchratoxinsHydrocarbons, BrominatedCacodylic AcidChromiumBenzopyrenesVinyl ChlorideBenzidinesBiotransformationBromatesVinyl CompoundsBenzo(a)pyreneMesocricetusMineral FibersChromatesCocarcinogenesisEthylene DichloridesLong-Term CareBiological AssayInternational AgenciesEpoxy CompoundsUnited States Environmental Protection AgencyFollow-Up StudiesPolycyclic CompoundsChrysenesDichloroethylenesPhenylenediaminesBenzeneSkin NeoplasmsLung Neoplasms