Table 1 The 12 stages of the seminiferous epithelial cycle of an adult mouse
| Â | Stages | |||||
|---|---|---|---|---|---|---|
I–IV | V–VI | VII–VIII | IX | X–XI | XII | |
Level 3 | Elongated spt | Elongated spt | Elongated spt | Â | Â | Â |
Level 2 | Round spt | Round spt | Round spt | Elongated spt | Elongated spt | Elongated spt |
Level 1 | Pachytene spc | Pachytene spc | Pachytene spc | Pachytene spc | Pachytene and diplotene spc | 2nd meiotic division |
Level 0 (basement membrane) | Intermediate spg | B-spg | Preleptotene spc | Leptotene spc | Leptotene and zygotene spc | Zygotene spc |