[Spermatogonia types in tepezcuintle (Cuniculus paca). Ultrastructural study].
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.
Ureña
F
F
Unidad de Microscopía Electrónica, Universidad de Costa Rica.
Bolaños
R
R
Rojas
N
N
Suárez
R
R
Quesada
R
R
D000818:Animals; D008297:Male; D008854:Microscopy, Electron; D012377:Rodentia; D013093:Spermatogonia / Q000648:ultrastructure*; D013094:Spermatozoa / Q000648:ultrastructure*; D013737:Testis / Q000648:ultrastructure*
Tipos de espermatogonios en "tepezcuintle" (Cuniculus paca). Estudio ultraestructural.