title: [Follow-up studies of the tissue healing process in peptic ulcer; clinicopathological study of recurrence refractory conditions in peptic ulcer].
mesh_terms: D005355:Fibrosis; D005500:Follow-Up Studies; D006635:Histamine H2 Antagonists / Q000627:therapeutic use; D006801:Humans; D010437:Peptic Ulcer / Q000188:drug therapy / Q000473:pathology* / Q000517:prevention & control; D012008:Recurrence
chemical_list: D006635:Histamine H2 Antagonists