Ureña F, Bolaños R, Rojas N, Suárez R, Quesada R
Unidad de Microscopía Electrónica, Universidad de Costa Rica.
Rev Biol Trop. 1988 Nov;36(2A):325-8.
Ultrastructural studies of different types of spermatogonia by thin section techniques 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.
