Soluble Material in the Gastrointestinal Tract of Rats under Normal Feeding Conditions

Abstract

WORK on intestinal absorption has almost always been carried out under non-physiological conditions—on fasted animals fed by stomach tube, on anæsthetized animals or animals with fistulæ and on isolated loops. Moreover, single nutrients have usually been administered. It seemed desirable to obtain information under more nearly physiological conditions and to examine the medium from which absorption was proceeding at different levels of the gastrointestinal tract.