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