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      "statement": "# Marshall and colleagues: attempted Koch-postulate test for pyloric Campylobacter\n\nReported a human self-inoculation experiment in which cultured pyloric Campylobacter colonized previously normal gastric mucosa and was followed by acute illness and histologically verified gastritis.\n\n## Scientific scope\n\nThe record is the exact four-author 1985 report and one-volunteer experiment. It supports bacterial causation of acute gastritis under the reported conditions, not that every ulcer has one cause or that all Koch postulates for chronic ulcer disease were established.\n\n## Reading status\n\nThis is a source-linked WRS catalogue note. A full explanatory guide and independent scientific reconstruction have not been completed for this entry. Read the identified original work for its complete narrative and arguments.\n\n## People and systems\n\nBarry J. Marshall; John A. Armstrong; David B. McGechie; Ross J. Glancy\n\nThe named authors contributed to this scoped work; individual effort shares and later applications are not assigned by the byline.\n\n\n\n## Original sources\n\n- [PubMed record for pyloric Campylobacter self-inoculation report](https://pubmed.ncbi.nlm.nih.gov/3982345/)\n- [McGill-hosted authorized reproduction of Marshall paper](https://www.med.mcgill.ca/epidemiology/hanley/c609/material/AmeeM/Marshall_Koch_Hpylori_1985.pdf)\n",
      "summary": "Reported a human self-inoculation experiment in which cultured pyloric Campylobacter colonized previously normal gastric mucosa and was followed by acute illness and histologically verified gastritis.",
      "title": "Marshall and colleagues: attempted Koch-postulate test for pyloric Campylobacter"
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