[Mucosal blood flow and defense mechanism].
D000375:Aging; D000818:Animals; D005744:Gastric Acid / Q000378:metabolism; D005753:Gastric Mucosa / Q000098:blood supply*; D006801:Humans; D051381:Rats; D012039:Regional Blood Flow; D013276:Stomach Ulcer / Q000503:physiopathology*