IncretinsGastric Inhibitory PolypeptideGlucagon-Like Peptide 1InsulinDipeptidyl-Peptidase IV InhibitorsReceptor, InsulinDipeptidyl Peptidase 4Glucagon-Like PeptidesDiabetes Mellitus, Type 2Receptors, GlucagonHypoglycemic AgentsGlucagonGlucoseInsulin ResistanceInsulin-Secreting CellsGastric BypassBlood GlucoseGlucose Tolerance TestObesity, MorbidBariatric SurgeryInsulin Receptor Substrate ProteinsInsulin, Long-ActingPostprandial PeriodInsulin AntibodiesInsulin AntagonistsIslets of LangerhansInsulin LisproInsulin Infusion SystemsGlucose Clamp TechniqueInsulin AspartInsulin, IsophaneInsulin, Regular, PorkHyperinsulinismAdipose TissueInsulinsObesityInsulin, Regular, HumanC-PeptideProinsulin