[Incidence of mast cells and ultrastructural properties of the human testis].

Incidence of mast cells in biopsy material from human testis has been studied. Review of the Hungarian and international literature dealing with mast cells is presented. Structure of mast cells of human testis seems to be similar to that of mast cells of other organs. In mast cells of the testis granules of lamellar, granular and mixed structure have been observed, but crystal-like ones has not been found. In the interstitial cells of the testis strikingly large number of Reinke crystals have been detected.