Add sry to a female embryo , it 'll make testes .

而女性胚胎中若有sry基因，则性腺将发育为睾丸。

Sperm take 2 months to grow to maturity in the testes .

精子在睾丸里成熟需要两个半月。

The compound had no apparent effect on the production of testosterone or other hormones made by the testes .

这种化合物，对由睾丸产生的睾酮和其他激素的产量，没有明显的影响。

The testes live outside of the abdomen for a good reason .

这也是为什么睾丸生长在腹腔外的理由。

Dr matzuk noticed that the gene it targets is similar to another , called brdt , which is only active in the testes .

马特医生注意到这种药物的目标基因和另一个叫做brdt的基因非常相似，brdt基因只存在于睾丸里。