[Submicroscopic structure of the jejunal mucosa of human fetuses].

Authors investigated the submicroscopic structure of the jejunal mucosa of 6--12 week old human foetuses, obtained from arteficial abortions. It was established, that in this age the jejunal mucosa differentiates and develops intensively. In the third month it is build up of morphological units enterocytes. Their structure is morphologically similar to that of the enterocytes of the adult, although in this age they have no function at all.