what is known is ( i ) that ulcer healing occurs spontaneously , ( ii ) that ulcers heal more quickly in the duodenum than in the stomach , ( iii ) that mucosal blood flow at ulcer edge improves with healing , and ( iv ) that healing can be speeded up by ( a ) not smoking , ( b ) removing acid from the stomach , and ( c ) using non-antisecretory mucosal protective agents such as sucralfate and colloidal bismuth .
C0041582
ulcers
C0236053
mucosal