Gastric MucosaFetusalpha-FetoproteinsFetal ProteinsStomachHelicobacterStomach DiseasesStomach UlcerGastritisGastrointestinal ContentsAchlorhydriaDibutyl PhthalateHelicobacter InfectionsHelicobacter heilmanniiHelicobacter pyloriGastric AcidParietal Cells, GastricPyloric AntrumChief Cells, GastricPregnancyRats, Inbred StrainsGastric JuiceGastric MucinsRats, Sprague-DawleyUreaseMetaplasiaGastric FundusGastrinsRats, WistarStomach NeoplasmsGastric EmptyingGerm-Free LifeGestational AgeHydrochloric AcidFamotidineCells, CulturedSkullIndomethacinH(+)-K(+)-Exchanging ATPaseTyrosine TransaminaseOrgan Culture TechniquesLiverGerbillinaeEmbryonic and Fetal DevelopmentCimetidineTaurocholic AcidMaternal-Fetal ExchangeFetal Tissue TransplantationVagotomyImmunohistochemistryHistamine H2 AntagonistsAnti-Ulcer AgentsFetal Hypoxia