Severe gastric ulcers accompanied with increased ulcerogenic factors , including gastric acid back-diffusion , histamine release , LPO generation and luminal hemoglobin content were also observed in these rats .
O B-DiseaseOrPhenotypicFeature I-DiseaseOrPhenotypicFeature O O O O O O O O O O O B-ChemicalEntity O O B-ChemicalEntity O O B-ChemicalEntity B-GeneOrGeneProduct O O O O O O B-OrganismTaxon O