title: Systems of life. No 146. Senior systems. 11.
mesh_terms: D000368:Aged; D000375:Aging; D003967:Diarrhea / Q000209:etiology / Q000503:physiopathology*; D004064:Digestive System / Q000503:physiopathology*; D006801:Humans; D007410:Intestinal Diseases / Q000175:diagnosis