Tipos de espermatogonios en "Tepezcuintle" (Cuniculus paca): estudio ultraestructural / Spermatogonia types in tepezcuintle (Cuniculus paca): ultrastructural study

RESUMO

Ultraestructural studies of different types ofspermatogonia by thin section techiniques and transmission electron microscopy showed that: Cuniculus paca has two types of Type A spermatogonia (A-O and A-1). Samples were taken at different stages of the cycle in the seminiferous tubule epithelium presented a similar pattern as those of other rodents. Type B spermatogonia are similar to those of the rat, the difference being that the heterochromatic zones are larger and more numerous. Both characteristics differentiate them from preleptotenic spermatocytes