Parietal Cells, GastricSomatostatinHistamineReceptors, SomatostatinPancreas, ExocrineH(+)-K(+)-Exchanging ATPaseHistamine ReleaseReceptors, Histamine H1Receptors, Histamine H2Gastric AcidAminopyrineReceptors, HistamineExocrine GlandsHistamine AntagonistsGastric MucosaHistamine AgonistsReceptors, Histamine H3Histamine H1 AntagonistsOctreotideGastrinsExocrine Pancreatic InsufficiencyPancreasHistamine H2 AntagonistsParietal BoneAchlorhydriaIntrinsic FactorVagotomy, Proximal GastricStomachChief Cells, GastricAnemia, PerniciousGastric FundusPentagastrinHistamine N-MethyltransferaseGastric JuiceCimetidinePancreatic JuiceHistidine DecarboxylasePyrilamineSomatostatin-28MetiamideAmylasesCarbacholMethylhistaminesEnterochromaffin-like CellsSecretinDuodenal UlcerSecretory RateDimapritHistamine H3 AntagonistsCholecystokininHistamine AgentsRabbitsPancreatic Function TestsDogsPyloric AntrumGastric FistulaVagotomyGastritis, AtrophicDumping SyndromePancreatic PolypeptideBrain MappingChlorpheniramineGastritisMagnetic Resonance ImagingReceptors, CholecystokininGuinea PigsGlucagonIslets of LangerhansPancreatic DiseasesPancreatic HormonesSincalideImmunohistochemistryDuodenumDose-Response Relationship, DrugEnterochromaffin CellsNeuroendocrine TumorsDiphenhydramineRanitidinePancreatic NeoplasmsTime FactorsSomatostatin-Secreting CellsCells, CulturedSLC4A ProteinsMast CellsBrainp-Methoxy-N-methylphenethylamineAcromegalyCeruletidePancreatitisInsulinIndium RadioisotopesPancreatinRats, Inbred StrainsRNA, MessengerPancreatic DuctsFunctional LateralityHydrochloric AcidPeptides, CyclicBethanechol CompoundsMicroscopy, Electron