beta CaroteneCarotenoidsVitamin EVitamin AAntioxidantsOral Submucous FibrosisVitaminsAscorbic AcidIntramolecular LyasesDietary SupplementsPhycomycesalpha-Tocopherolbeta-Carotene 15,15'-MonooxygenaseDouble-Blind MethodGeranylgeranyl-Diphosphate GeranylgeranyltransferaseLuteinzeta CaroteneSmokingCataractLycopersicon esculentumRiskIncidenceTreatment FailureXanthophyllsFruitInterleukin-1betaFollow-Up StudiesDaucus carotaDietCardiovascular DiseasesProportional Hazards ModelsErwiniabeta 2-MicroglobulinAnticarcinogenic AgentsLung NeoplasmsBiological AvailabilityChromatography, High Pressure LiquidNorisoprenoidsVegetablesVitamin A DeficiencyPlants, EdibleMucoralesIsomerismReceptors, Adrenergic, betaIntegrin beta3OxygenasesAlkyl and Aryl TransferasesMicronutrients