
handle: 10669/27385
Un estudio ultraestructural de los tipos de espermatogonios de Cuniculus paca (Tepezcuintle), con microscopía electrónica de transmisión y la técnica de secciones finas indica que Cuniculus paca posee dos tipos de espermatogonios de tipo A (los A-0 y A-1). Estos fueron observados en diferentes estadios del ciclo del epitelio seminífero, y presentan una morfología similar a la de otros roedores. Los espermatogonios de tipo B del tepezcuintle son semejantes a los de la rata, pero con zonas heterocromáticas más grandes y más abundantes, lo que los diferencia muy bien de los espermatocitos preleptoténicos.
Ultraestructural studies of different types of espermatogonia by thin section techniques and tranamission electron microscopy showed that Cuniculus paca has two types of Type A spermatogonia (A-0 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.
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