What bacteria did Barry Marshall and Robin Warren discover?
Helicobacter pylori
Streptococcus pneumoniae
Clostridium difficile
Mycobacterium tuberculosis
Answer
Helicobacter pylori, discovered by Barry Marshall and Robin Warren, is a bacterium that infects the stomach. Before their discovery, stomach ulcers were believed to be caused by stress or spicy food. Marshall and Warren's research revolutionized the understanding of stomach ulcers and led to the development of effective treatments.
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