At all-around week 7 in utero, the sex-similar gene around the Y chromosome initiates the event on the testicles in male infants. The testicles produce testosterone. 层次（鞘膜 · 白膜 · 血管膜） · 附件 · 纵隔 · 小叶 · 隔片 · 莱迪希细胞 · 塞尔托利氏细胞 · 血睾屏障 Drop of testosterone manufacturing https://hectorsxzik.blogolize.com/the-ultimate-guide-to-nexalyn-erfahrungen-68356699