PhytosterolsSitosterolsStigmasterolSterolsCholestanolCholesterolXanthomatosisAbsorptionEsterificationDesmosterolCholestanesSqualeneIntestinal AbsorptionFlame IonizationAloeAzetidinesCholesterol, DietaryAnticholesteremic AgentsCholesterol, LDLHypercholesterolemiaCorn OilChromatography, GasPlant OilsErigeronChromatography, Supercritical FluidATP-Binding Cassette TransportersDeuteriumNutsInterleukin-1betaLymphatic SystemPlant ExtractsErythrocyte DeformabilityBileDietLipid Metabolism, Inborn ErrorsBile Acids and SaltsLipidsMargarineEstersThoracic Ductbeta 2-MicroglobulinCross-Over StudiesSterol O-Acyltransferase