GlucagonReceptors, GlucagonGlucagon-Secreting CellsDopamine AgonistsInsulinLiverSomatostatinGABA AgonistsBlood GlucoseIslets of LangerhansDose-Response Relationship, DrugPurinergic P1 Receptor AgonistsCyclic AMPGlucoseProglucagonHypoglycemiaMuscarinic AgonistsGluconeogenesisNicotinic AgonistsEpinephrineGlucagon-Like PeptidesRats, Inbred StrainsAdrenergic AgonistsAdrenergic alpha-2 Receptor AgonistsAdenylate CyclaseSerotonin 5-HT2 Receptor AgonistsPancreasGlucagon-Like Peptide 1Pancreatic PolypeptidePancreatic HormonesSerotonin 5-HT1 Receptor AgonistsHistamine AgonistsAdrenergic beta-AgonistsPurinergic P2 Receptor AgonistsRats, Sprague-DawleyGABA-A Receptor AgonistsAdrenergic alpha-AgonistsCholinergic AgonistsKineticsCells, CulturedAdenosine A1 Receptor AgonistsReceptors, Gastrointestinal HormoneLiver GlycogenCalciumDogsAdrenergic alpha-1 Receptor AgonistsRats, WistarExcitatory Amino Acid AgonistsIsoproterenolCannabinoid Receptor AgonistsHormonesAdrenergic beta-3 Receptor AgonistsReceptors, Opioid, muFastingAdenosine A3 Receptor AgonistsBucladesineReceptors, Opioid, kappaBinding, CompetitiveLigandsTime FactorsCricetinaeSecretinNorepinephrinePhenylephrineRadioligand AssayCell LineGABA-B Receptor AgonistsCarbacholSignal TransductionC-PeptidePerfusionReceptors, Opioid, deltaSerotonin 5-HT4 Receptor AgonistsHyperglycemiaAdenosineCell MembraneVasopressinsArginineAdenoma, Islet CellLactatesOxyntomodulinFatty Acids, NonesterifiedReceptors, Dopamine D2PeptidesMice, Inbred C57BLCHO CellsSecretory RatePropranololStimulation, ChemicalReceptors, Adrenergic, betaHypoglycemic AgentsSomatostatin-Secreting CellsGastrointestinal HormonesDrug InteractionsEnkephalin, Ala(2)-MePhe(4)-Gly(5)-TheophyllineColforsinVenomsPurinergic AgonistsGlucagonoma