On the structure and importance of the epithelium in the human ductus epididymidis (author's transl)

In the wall of the ductus epididymidis rosette-like crystalloids and in the epithelium three types of cells are to be found: round basal cells, pale cylindrical epithelium and dark cylindrical epithelium. The latter shows a high metabolic activity with lamellar rough ergastoplasm and low vesicular secretion. Apocrine separation of drops of secretion is seen only sporadically. The functional relations between these states, the possibilities of biosynthesis in the epididymis, and the maturing of spermatozoa are discussed.