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Portion of the mucous membrane from the small intestine, magnified, showing the villi on its free surface, and between them the orifices of the tubular glands. Labels: 1, Portion of a clustered gland. 2, A solitary gland. 3, Fibrous tissue.

A Portion of the Mucous Membrane from the Small Intestine

Portion of the mucous membrane from the small intestine, magnified, showing the villi on its free surface,…