The problem of measurement of intestinal absorption in man.
D004573:Electrolytes / Q000378:metabolism; D006801:Humans; D007408:Intestinal Absorption; D007441:Intubation, Gastrointestinal; D008722:Methods; D010477:Perfusion; D014867:Water / Q000378:metabolism
D004573:Electrolytes; D014867:Water