1,2-DimethylhydrazineDimethylhydrazinesMethylhydrazinesMonomethylhydrazineColonic NeoplasmsCarcinogensHydrazinesColonAberrant Crypt FociPrecancerous ConditionsChlorophyllidesNeoplasms, ExperimentalRats, Inbred F344Methylazoxymethanol AcetateCocarcinogenesisIntestinal NeoplasmsIntestinal MucosaAnticarcinogenic AgentsAmorphophallusAdenosarcomaAdenocarcinomaRats, Inbred StrainsAzo CompoundsDisease Models, AnimalCecal NeoplasmsRats, WistarIntestine, LargeDietary FiberAdenomaColonic DiseasesAlkylationPectinsGuanineCelluloseInjections, SubcutaneousDietLiverCell DivisionBody WeightRats, Sprague-DawleyIntestine, SmallRectumAzoxymethaneCecumPlant ExtractsMutagensGlutathione Peroxidase