[Innervation of the small intestinal mucosa of laboratory animals. II. Ultrastructure of neuro-cellular connections].

In addition to our light microscopic contribution (Stach, Hung 1978) giving an insight into the density, architecture, histochemical variety and relations between plexus mucosus and Lieberkühn's glands the herewith presented electron microscopic results reveal mainly neuro-cellular relations from the lamina propria. This means that the plexus mucosus has mainly the function to innervate blood vessels and lymphatics as well as smooth muscle cells and connective tissue cells (mast cells, histiocytes, plasma cells) of the small intestine mucosa.