Today, we know human embryos have tails that dissolve as the embryo develops.

今天，我们知道人类的尾巴会随着的发育而被溶解。

Conservationists started an artificial breeding programme, using eggs from the females and sperm from Suni to produce an embryo – an unborn animal in the very early stages of development.

环境保护主义者启动了一项人工配计划，利用雌性的卵子和" 苏尼" 的精子培育出一——处于发育早期的未出生动物。

Before we're born, human embryos develop three different types of kidneys.

在我们出生之前，人类发育出三不同的类型肾脏。

He said he had edited – meaning changed – the genetic material of two human embryos. The embryos developed into twin girls, who were born.

贺建奎称，他编辑（改变）了两人类的遗传物质。这些发育成一对双胞女婴并顺利出生。

That's a huge milestone in fetal development.

这是发育中的重要里程碑。

The answer to question Number 1, is yes, definitely: embryos start peeing after just two months of development, around the time they first begin swallowing and, therefore, drinking amniotic fluid.

答案是，是滴，肯定的：在发育后仅两月后就开始嘘嘘，大约也在这时候，他们开始吞咽，以及，喝羊水。

In FAS, ethanol interferes with cell division and proliferation, cell growth and differentiation and with the migration of mature cells to their final location in the developing embryo which affects the development of various fetal tissues, including the brain.

在FAS中，乙醇会干扰细胞分裂、增殖，影响细胞生长和分化，并且在发育的过程中，妨碍成熟细胞迁移到它们最终的部位，这会影响儿各的发育，其中包括大脑。

The septum is formed during development as this muscular ridge of tissue grows upward from the apex, or the tip, and then fuses with a thinner membranous region coming down from the endocardial cushions.

室间隔在发育期间形成，这肌肉嵴从心尖部往上长，并与从心内膜垫向下延伸的薄膜区域融合。

More positively, cell migration is the driving force of embryo development and is, in adults, essential to the immune response and to the healing of wounds.

更加肯定的是，细胞迁移是发育的原动力，而且对成年人来讲，细胞迁移对免疫反应以及伤口愈合非常重要。

Around week 8 of development the neuroblasts get to the proximal colon of the gut, and then they pass through the distal colon, and around week 12 they finally the reach the rectum.

在发育的第8周左右，神经母细胞到达肠道的结肠近端，之后穿过结肠远端； 在第12周左右到达直肠。

The first exhibit shows a human sperm entering an egg. The sculptures progress from the egg producing an embryo, which then turns into a fetus in a giant womb.

第一展品展现了一颗人类精子进入一颗卵子。这些雕塑从卵子发育成，然后变成一巨大子宫中的一儿。

By an embryo's fifth week of development, these main three chambers start morphing into five secondary vesicles that essentially form the roots of what will become your grown-up brain structures.

到发育的第五周，这三主要的腔室开始变成五次要的囊泡，它们基本上形成了你成年大脑结构的根。

One is to shed light on the complicated process of embryological development, which might eventually lead to treatments for some congenital diseases.

一是阐明发育的复杂过程，这最终可能导向对某些先天性疾病的疗法。

Sozen added that scientists should be able to use the models to study embryonic failure, developmental disorders and pregnancy loss.

索岑补充说，科学家应该能够使用这些模型来研究衰竭、发育障碍和妊娠丢失。

Because if the egg gets jarred, you don't want to kill the embryo that's developing by a sudden shock.

因为如果蛋受到冲击，你肯定不想因为瞬间的冲击扼杀正在发育的。

And once this second baby leaves the pouch, the third embryo starts to develop, and the cycle continues.

第二幼崽一离开育儿袋，第三就开始发育，就这样一直循环下去。

Those embryos followed the development of natural mouse embryos up to eight and a half days after fertilization.

这些在受精后8天半的时间里和自然受精的老鼠的发育情况一致。

Fertility specialists now grow embryos longer in the lab and carry out more tests for genetic problems.

生育专家现在延长了在实验室发育的时间，而且会对遗传问题进行更多测试。

But he added that " the farthest we could get is day 14 in human embryo development."

但他补充说，“我们最多只能做到人类发育的第 14 天。”

I was horrified by how many deformed embryos developed in animals that had eaten cesium-contaminated food.

食用铯污染食物的动物，其畸形发育数量让我惊骇不已。