PhytosterolsSitosterolsMargarineYogurtSterolsStigmasterolCholesterol, LDLPlants, Genetically ModifiedPlant ProteinsPlant LeavesCholesterolZeatinPlant ExtractsArabidopsisPlant RootsGenes, PlantPlant Growth RegulatorsAnticholesteremic AgentsButterHypercholesterolemiaPhytotherapySterol 14-DemethylaseArabidopsis ProteinsPlant ShootsAloeCross-Over StudiesFlame IonizationPlant OilsPentacyclic Triterpenes