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Two-pronuclear zygote rate of ICSI by using cryopreserved motile or immotile sperm.
| Number of sample | Two-pronuclear zygote rate (%) | |
| ICSI from motile sperm | 25 | 69.91 (158/226) |
| ICSI from immotile sperm | 5 | 30.84∗ (33/107) |
Statistically significant (P < .05).
