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![]() Date: 2011-03-29 10:59:33Gram-negative bacteria Proteobacteria Helicobacter pylori Barry Marshall Peptic ulcer Helicobacter Gastritis Robin Warren Peptic Medicine Health Gastroenterology | Source URL: sciencecases.lib.buffalo.eduDownload Document from Source WebsiteFile Size: 366,40 KBShare Document on Facebook |