Oocytes in Immature and Mature Guinea Pigs 



Fig. 1. Immature guinea pig. Nest of oocytes showing phases of meiosis, 



probably pachytene and diplotene. 

 Fig. 2. Pubertal guinea pig. Nest of oocytes showing phases of meiosis, 



including zygotene. 

 Fig. 3. Mature guinea pig. Nest of oocytes showing phases of meiosis, 



including apparent zygotens. 

 Fig. 4. Old guinea pig. Nest of oocytes showing phases of meiosis, including 



apparent zygotene. 

 Fig. 5. Normal oocyte, showing pachytene phase of meiosis. 

 Fig. 6. Three stages of meiosis. 



facing page 41 



