Jejunoileal BypassHyperlipidemiasCholesterolCholesterol, DietaryCholesterol, HDLCholesterol, LDLCholesterol EstersLiverLiver DiseasesCholesterol OxidaseLiver TransplantationLiver NeoplasmsCholesterol 7-alpha-HydroxylaseLiver CirrhosisMicrosomes, LiverFatty LiverLipidsTriglyceridesCholesterol, VLDLLiver RegenerationLipoproteinsHypercholesterolemiaAnticholesteremic AgentsSterol O-AcyltransferaseSterolsLipoproteins, HDLBile Acids and SaltsHydroxymethylglutaryl CoA ReductasesBileApolipoprotein A-ILiver Function TestsMitochondria, LiverLipid Metabolism