Jejunoileal BypassHyperlipidemiasInsulinReceptor, InsulinInsulin ResistanceBlood GlucoseGlucoseGlucose Tolerance TestHyperinsulinismHypoglycemic AgentsFastingInsulin Receptor Substrate ProteinsDiabetes Mellitus, Type 2Islets of LangerhansGlucose Clamp TechniqueInsulin AntibodiesObesityGlucagonInsulin, Long-ActingC-PeptideAdipose TissueHyperglycemiaInsulin LisproInsulin AntagonistsInsulin-Secreting CellsDiabetes Mellitus, ExperimentalFatty Acids, NonesterifiedLeptinLiverHypoglycemiaBody WeightInsulin Infusion SystemsGlucose IntoleranceProinsulin