PhytosterolsSitosterolsMargarineYogurtSterolsStigmasterolCholesterol, LDLPlants, Genetically ModifiedPlant ProteinsPlant LeavesCholesterolZeatinEnergy IntakePlant ExtractsDietArabidopsisPlant RootsGenes, PlantPlant Growth RegulatorsButterAnticholesteremic AgentsHypercholesterolemiaPhytotherapyCross-Over StudiesSterol 14-DemethylaseArabidopsis ProteinsPlant ShootsPlant OilsAloeFlame IonizationLipidsPentacyclic Triterpenes