Absorption of folic acid from the small intestine of the rat.

摘要: The absorption of folic acid from segments the small intestine rat has been measured in situ with tritium-labelled acid. fraction absorbed was independent concentration below 10-6 M but depressed to half at 4×10-5 M. Direct measurements fluxes showed that mucosal → serosal flux about 14 times flux, and therefore uptake is an active process. In ileum not duodeno-jejunum, by presence electrolyte. There little difference absorptive capacity between jejunum nor there any significant change animals suffering a dietary deficiency