PhytosterolsSitosterolsMargarineYogurtSterolsStigmasterolCholesterol, LDLPlants, Genetically ModifiedPlant ProteinsPlant LeavesCholesterolFoodZeatinPlant ExtractsArabidopsisPlant RootsGenes, PlantPlant Growth RegulatorsButterAnticholesteremic AgentsHypercholesterolemiaPhytotherapySterol 14-DemethylaseArabidopsis ProteinsCross-Over StudiesPlant ShootsAloeFlame IonizationPlant OilsPentacyclic Triterpenes