Barry Marshall
Marshall and Warren tried to give the bacteria to piglets in 1984, but it did not work. Marshall drank some of the bacteria and soon developed gastritis with achlorhydria. He had stomach discomfort, nausea, vomiting and bad smelling breath. On the 14th day of the infection, biopsies of Marshall's stomach did not show any bacteria. His body may have got rid of the bacteria without help. His wife made him take antibiotics immediately so there was no way of checking the negative result again. He did not develop antibodies to H.pylori. This means that natural immunity can sometimes get rid of H.pylori infection.  His illness and recovery, showed the link between H. pylori and gastritis, but not for peptic ulcer. This experiment was published in 1985 in the Medical Journal of Australia and is among the most cited articles from the journal.