The type of mucosa in which gastric ulcers occur.
D001284:Atrophy; D001706:Biopsy; D002908:Chronic Disease; D005753:Gastric Mucosa / Q000473:pathology*; D005756:Gastritis / Q000150:complications*; D006801:Humans; D013276:Stomach Ulcer / Q000209:etiology / Q000473:pathology*