What was Barry Marshalls contribution to science?

Answer 1

Barry Marshall

• is an Australian physician,Nobel Prize laureate in Physiology or Medicine, and Professor of Clinical Microbiology at theUniversity of Western Australia.
• Marshall is well-known for proving that the bacterium Helicobacter pylori is the cause of most peptic ulcers, reversing decades of medical doctrine which held that ulcers were caused by stress, spicy foods, and too much acid.

Nobel laureates, Professor Barry Marshall and Emeritus Professor Robin Warren identified the bacterium responsible for peptic ulcers. Now, crippling stomach ache and invasive surgery can be avoided by taking a simple course of antibiotics.