title: Spirals and ulcers.
mesh_terms: D001419:Bacteria / Q000302:isolation & purification*; D002167:Campylobacter / Q000302:isolation & purification*; D005753:Gastric Mucosa / Q000382:microbiology; D005756:Gastritis / Q000382:microbiology*; D006801:Humans; D010437:Peptic Ulcer / Q000382:microbiology*