GastritisParietal Cells, GastricGastritis, AtrophicH(+)-K(+)-Exchanging ATPaseAutoimmune DiseasesThymectomyStomach NeoplasmsGastric MucosaAnemia, PerniciousGastrinsHelicobacter pyloriHelicobacter InfectionsAchlorhydriaStomachIntrinsic FactorAutoantibodiesMice, Inbred BALB CAutoantigensGastrectomyLymphopeniaGastroscopyMetaplasiaPepsinogen APyloric AntrumAdenocarcinomaGastritis, HypertrophicCD4-Positive T-LymphocytesT-Lymphocytes, RegulatoryPepsinogen CEarly Detection of CancerImmunoglobulin GGene Expression Regulation, NeoplasticCell Line, TumorStomach UlcerNeoplasm InvasivenessDisease Models, AnimalPrecancerous ConditionsPrognosisPeptic UlcerNeoplasm StagingStomach DiseasesMice, Inbred C57BLBiopsyDuodenal UlcerHelicobacter felisTumor Markers, BiologicalMice, NudeNeoplasm MetastasisBile RefluxCarcinoma, Signet Ring CellPepsinogensImmunohistochemistryReverse Transcriptase Polymerase Chain ReactionEndoscopy, GastrointestinalSurvival RateRetrospective StudiesGenetic Predisposition to DiseaseDyspepsiaRisk FactorsNeoplasm ProteinsOxonic AcidFollow-Up StudiesChronic DiseaseFluorouracilRNA, MessengerPeritoneal NeoplasmsAntineoplastic Combined Chemotherapy ProtocolsSurvival AnalysisCarcinomaOvarian NeoplasmsDisease ProgressionProstatic NeoplasmsProspective StudiesCardiaBreast NeoplasmsLung NeoplasmsJapanDNA MethylationChinaAntineoplastic AgentsCell ProliferationColonic NeoplasmsGenotypeGastric JuiceLymphatic MetastasisTegafurEndoscopyHelicobacter heilmanniiPolymerase Chain ReactionDuodenitisAdenocarcinoma, ScirrhousPostgastrectomy SyndromesUreaseCisplatinHelicobacterBlotting, WesternAntigens, BacterialPancreatic NeoplasmsPolymorphism, GeneticGastroenterostomy