Receptors, GlucagonGlucagonOxyntomodulinReceptors, Gastrointestinal HormoneGlucagon-Secreting CellsDiabetes Mellitus, Type 1Diabetes MellitusLiverAdenylate CyclaseDiabetes Mellitus, Type 2GlycogenolysisInsulinBlood GlucoseGlucagon-Like Peptide 1Glucagon-Like PeptidesGTP-Binding Protein alpha Subunits, GsGlucoseDiabetes ComplicationsCyclic AMPDiabetes Mellitus, ExperimentalCell MembraneReceptors, Cell SurfaceIslets of LangerhansBinding, CompetitiveGuanylyl ImidodiphosphateGlucose Tolerance TestHepatocytesHypoglycemiaRats, Inbred StrainsKineticsSomatostatinHypoglycemic AgentsGuanosine TriphosphateGluconeogenesisProglucagonMolecular Sequence DataPancreasDiabetes, GestationalHyperglycemiaPeptidesHemoglobin A, GlycosylatedAmino Acid SequenceArrestinsCricetinaeEnzyme ActivationPancreatic HormonesPancreatic PolypeptideCells, CulturedTransfectionFastingEpinephrineRats, Sprague-DawleyC-PeptideCell LineInsulin-Secreting Cells