Intestinal AbsorptionCholesterolAbsorptionSitosterolsCholesterol, DietaryPhytosterolsAzetidinesDesmosterolSterolsCholestanesBile Acids and SaltsCholesterol 7-alpha-HydroxylaseCholesterol EstersAnticholesteremic AgentsCholesterol, LDLHydroxymethylglutaryl CoA ReductasesPregnenoloneSteroid HydroxylasesCholesterol, HDLMevalonic AcidLiverHypercholesterolemiaCholesterol Side-Chain Cleavage EnzymeBileLipoproteinsLovastatinSterol O-AcyltransferaseCholestanolEnterocytesFecesLymphSpirostansIntestine, SmallKineticsIntestinesLipidsCoprophagiaTriglyceridesCholesterol OxidaseMicrosomes, LiverCholesterol, VLDLATP-Binding Cassette TransportersMicellesJejunumStigmasterolEsterificationDietary FatsSulfaguanidineLipid MetabolismCaco-2 CellsGallbladderCholestyramine ResinLecithinsSkin AbsorptionTrioleinBiological TransportCarbon RadioisotopesATP Binding Cassette Transporter 1Biological AvailabilityDietOrphan Nuclear ReceptorsSterol EsteraseLymphatic SystemMesocricetusChylomicronsTritiumGastrointestinal TransitCholic AcidButterIleumHyperlipidemiasScavenger Receptors, Class BReceptors, LDLEstersSqualeneTaurocholic AcidBiliary TractIntestinal MucosaSpectrophotometry, AtomicSimvastatinPlant GumsCholelithiasisApolipoproteins BThoracic DuctAdministration, OralX-Ray Absorption SpectroscopyMargarineBiliary FistulaMice, Inbred AKRApolipoproteins EHydroxymethylglutaryl-CoA Reductase InhibitorsMicrovilliSaponinsCross-Over StudiesLipoproteins, LDLSpectrophotometryGalactansLipoproteins, HDLIleostomyPhospholipids