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Marshall and Warren

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  • Why didn’t scientists believe their idea at first?
    They thought stomach acid killed all bacteria
  • What scientific principle did Marshall demonstrate by infecting himself?
    Self-experimentation / proving causation
  • What shape is H. pylori?
    Spiral-shaped
  • What bacteria did Marshall and Warren discover causes most stomach ulcers?
    H. pylori
  • In what year did Marshall and Warren win the Nobel Prize?
    2005
  • What key scientific idea did their work challenge?
    That ulcers were caused by stress and lifestyle, not bacteria
  • What did Marshall develop after drinking the bacteria?
    Gastritis symptoms / stomach inflammation
  • Which part of the digestive system is affected in a gastric ulcer?
    The stomach
  • Name one method Marshall & Warren used to identify H. pylori.
    Biopsy, staining, or culture
  • Where in the body does H. pylori live?
    The stomach
  • True or False: Stress is the main cause of peptic ulcers.
    False
  • Who was Marshall’s scientific partner?
    Robin Warren
  • Which scientist drank the bacteria to prove his hypothesis?
    Barry Marshall
  • What treatment did Marshall & Warren prove works for ulcers?
    Antibiotics
  • Why was it difficult to grow H. pylori at first?
    It grew very slowly / needed the right conditions
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