The new vaccine called Flu Block is made without eggs.

新疫苗名为Flu Block，它的制作不需要卵细胞。

Fertilising these eggs for experimentation is forbidden in America.

美禁止为实验用的卵细胞受精。

Britain's Human Fertilisation and Embryology Authority, however, will allow it in certain cases.

不英的人类受精和胚胎学管理局将在某些研究中允许给卵细胞授精。

So an egg cell must be fertilized by a sperm cell to form two full sets of chromosomes.

因此，卵细胞必须由精子受精才能形成两套完整的色体。

In parthenogenesis, an embryo develops from an unfertilized egg cell that doubles its own chromosome count.

在孤雌生殖中，胚胎由未受精的卵细胞在色体数目翻倍后发育而来。

Then, they turned the male mouse stem cells into female cells and produced functional egg cells.

然后，他们将雄性老鼠的干细胞转化为雌性细胞，并产生功能正常的卵细胞。

The follicles are small clusters of granulosa and theca cells that protect the developing egg cell.

卵泡是由颗粒细胞、卵泡膜细胞组成的小簇，保护发育中的卵细胞。

By two years of age, none are left, essentially causing " menopause before menarche" .

在患儿两，基本没有卵细胞保留，导致“初潮前的更年期”。

While only one egg cell is produced each month.

而每个月只产生一个卵细胞。

Without eggs, the ovaries fail to develop normally, becoming non-functional, fibrous, " streak" ovaries.

没有卵细胞，卵巢无法正常发育，变成无功能的卵巢，被呈条索状纤维组织取代。

Then, the adult cell’s nucleus gets stuck into the egg cell essentially replacing the egg cell’s nucleus.

然后，成体细胞的细胞核卡在卵细胞中，基本上取代了卵细胞的细胞核。

Currently, many women over 45 have to make do with in-vitro fertilisation (IVF) using the egg of a younger woman.

目前，许多45以上的妇女只能凑合着用年轻女人的卵细胞进行体外受精（IVF）。

Researchers have confirmed that women harbour ovarian stem cells, and that these can give rise to new eggs.

研究者们证实，女人拥有卵巢干细胞，而这种细胞能成为新的卵细胞的来源。

And in its new home in the egg cell, it busts out all those instructions.

在它位于卵细胞的新家中， 它会执行所有这些指令。

For example, Archaefructus had modified leaves that surrounded its egg cells, forming what's called a carpel.

例如， Archaefructus 改变了包围其卵细胞的叶子，形成了所谓的心皮。

Using electricity, they transferred the mammary gland cell's nucleus into an egg cell from a second sheep.

他们利用电将乳腺细胞的细胞核转移到第二只绵羊的卵细胞中。

It starts with an unfertilized egg cell, added to a blob of yolk, and squeezed down a stretchy tube called an oviduct.

它始于将未受精的卵细胞添加到一团卵黄并挤压一个称为输卵管的弹性管。

One approach is to combine the nuclear DNA from an affected egg cell with healthy mitochondria from another woman.

一种方法是将受影响卵细胞的核 DNA 与另一名女性的健康线粒体结合起来。

At this scale, Mars is a tiny 0.5 mm red dot, the same width of a human egg cell.

在这个比例下，火星是一个 0.5 毫米的小红点，与人类卵细胞的宽度相同。

New research into mammal reproductions suggests that in principle it might be possible for humans to conceive children without an egg cell.

哺乳动物生殖领域的最新研究发现，大体来讲，人类可以在没有卵细胞的情况下繁育后代。