Ultrastructural identification of Sertoli cells in the semen of subfertile men. About four cases.

In this work Sertoli cells were identified in the semen of subfertile men using transmission electron microscopy. This observation is rare and has only been reported before once. These results would favour of seminiferous epithelium alterations and could be correlated with the presence of immature seminal line elements or non sperm cells in prospective studies.