If a male totally lacks sperm or the testicular cells that make it, a nucleus from one of his body cells could be inserted into an egg from his mate that had had its nucleus removed.

• 如果一个男子完全没有精子或者没有制造精子的睾丸细胞，那么就可以从他的身体细胞中取一个细胞核放置到他的配偶的除去细胞核的卵子中。