Ultrastructure of Sertoli cells in scrotal testis of unilaterally cryptorchid goat.

Electron microscopy revealed changes in Sertoli cells of the scrotal testes of unilaterally cryptorchid West African dwarf goats from neonate to maturity. The major changes included alteration of the cell shape due to proliferation of the spermatogenic cells, development of nucleolar vesicles and indentations of nuclear outlines, and profusion of smooth endoplasmic reticulum. These alterations are similar to those described for the differentiation of Sertoli cells in normal testis.