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What is the main subject of Barry Marshall's research?

Microbiology
Genetics
Pharmacology
Neuroscience

Answer

Microbiology is the main subject of Barry Marshall's research. He is an Australian physician and Nobel laureate known for his work on Helicobacter pylori, a bacterium that causes stomach ulcers. Marshall's research has revolutionized the understanding and treatment of peptic ulcer disease, which was previously thought to be caused by stress and spicy food.