The virus can survive in the eyes, testes, placenta, and amniotic fluid.

病毒可以在眼睛、、盘和羊水中存活。

But the procedure is largely irreversible: it involves stopping the flow of sperm from the testes by cutting conduits known as the vas deferens and sealing them or tying them off.

它包括通过切割被称为输精的道来阻止精子从流出，并将它们密封或打结。

It took more than 50 years for scientists to figure out how these huge bodily changes, like the roosters and their testes, and the way that bodies keep themselves from changing, like with temperature, are controlled.

科学家们花了 50 多年时间才弄清楚这些巨大的身体变化，如公鸡和它们的，以及身体保持自身变化的方式，如温度，是受控制的。

He had his testes measured, a blood sample taken and he was made to do exercises to see how strong he was.

检测了，抽取了血样，并让他运动，看看他有多强壮。

The testes — the gonads of the anatomical male — are tasked with making male gametes, sperm, and the androgen hormone testosterone.

——解剖学上男性的性腺——负责制造男性配子、精子和雄激素酮。

The leydig cells are in the interstitium of the testes and in response to luteinizing hormone they convert cholesterol into testosterone.

间质细胞正如其名，位于的间质中，在LH的刺激下，它能把胆固醇转化成酮。

Beginning at puberty, the Leydig cells of the testes respond to the luteinizing hormone by converting more cholesterol into testosterone.

青春期开始后，的间质细胞开始对LH产生应答，将更多的胆固醇转化为酮。

From there, the sperm — although still immobile — leave the testes, by way of the epididymis, a long, tangled set of tubes behind the testes where they'll spend the next few weeks gaining their mobility.

从那里，精子——然不动——通过附离开，附是后面一套又长又纠结的子，在那里它们将在接下来的几周里获得流动性。

Less testosterone also suppresses testes maturation and sperm production as well as development of secondary male characteristics.

酮水平的下降还会抑制的发育和生精，男性第二性征的发育也会受抑制。

But that's not to say that the testes aren't complex.

但这并不是说不复杂。

In addition, the Sertoli cells of the testes respond to follicle-stimulating hormone by producing more sperm.

此外，的支持细胞开始对FSH产生应答，产生更多的精子。

Early on in male development, testosterone helps the external sex organs to differentiate into male genitals and causes the testes to descend from the abdomen into the scrotal sac.

在男性发育的早期，酮帮助外部性器官分化成男性生殖器，还可促进从腹腔降入阴囊。

But your pituitary — which is nestled all comfy under your brain — produces follicle-stimulating hormone, which helps regulate growth and triggers sexual maturity, and it only targets specific cells in the ovaries and testes.

但是你的垂体——它舒适地依偎在你的大脑下面——产生促卵泡激素，帮助调节生长和触发性成熟，它只针对卵巢和中的特定细胞。

The gonads are either the testes or the ovaries, and this will control sexual development and reproduction.

性腺是指或者卵巢，而这可以控制性征发育和生育。

The hypothalamic-pituitary-gonadal axis is a system of hormone signaling between the hypothalamus, pituitary gland, and gonads, either the testes or ovaries, to control sexual development and reproduction.

下丘脑-垂体-性腺轴是下丘脑、垂体与生殖腺（或卵巢）之间的激素信号转导系统，控制性发育和生殖。

HDL then delivers the cholesterol back to the liver, or to places like the ovaries, testes, and adrenal glands, which use it to make steroid hormones.

然后高密度脂蛋白将胆固醇输送回肝脏，或者卵巢、和肾上腺等地方，这些地方用它来制造类固醇激素。

So the testes have to be outside the body cavity to reach the lower temperature necessary for proper spermatogenesis, or sperm production.

所以必须在体腔之外，才能达到正常精子发生或精子产生所需的较低温度。

During puberty, the Leydig cells of the testes respond to the luteinizing hormone by converting more cholesterol into testosterone.

在青春期，间质细胞对促黄体生成素作出反应，将更多的胆固醇转化为酮。

One of these enzymes is found only in the testes.

其中一种酶仅存在于中。

Basically, these hormones interfere with the sperm growth cycle in specialized cells in the testes.

基本上，这些激素会干扰中专门细胞里的精子生长周期。