GlucagonReceptors, GlucagonMice, KnockoutGlucagon-Secreting CellsInsulinLiverSomatostatinBlood GlucoseIslets of LangerhansGlucoseProglucagonHypoglycemiaGluconeogenesisGlucagon-Like PeptidesGene Knockout TechniquesPancreatic HormonesPancreasPancreatic PolypeptideGlucagon-Like Peptide 1EpinephrineRats, Inbred StrainsLiver GlycogenCyclic AMPReceptors, Gastrointestinal HormoneAdenylate CyclaseMice, Inbred C57BLFastingDogsHormonesC-PeptideSecretinHyperglycemiaAdenoma, Islet CellBucladesineLactatesKineticsSomatostatin-Secreting CellsFatty Acids, NonesterifiedGlucagonomaPerfusionGastrointestinal HormonesOxyntomodulinGastric Inhibitory PolypeptideArginine3-Hydroxybutyric AcidCells, CulturedSecretory RateKetone BodiesDiabetes Mellitus, ExperimentalVasopressinsPhosphorylasesInsulin-Secreting CellsRadioimmunoassayGlycogenolysisHydroxybutyratesHydrocortisoneAmino Acids