They're very old, evolutionarily speaking, and likely resemble some of our first multicellular ancestors.

从进化角度来看，它们非常古老，很可能与我们最早多祖先相似。

This is the central problem that all multicellular creatures have to solve.

这是所有多生物必须解决核问题。

These then leave the host cell and mature, ultimately seeking more T-cells.

病毒接着离开宿主并且发育成熟，最终寻找更多T。

A younger organism would naturally release more cytokines than and elderly one.

年轻有机体自然会比年老有机体释放更多因子。

Eventually those cells-turned-virus-making-factories die, which actually ends up releasing more viruses to infect more cells.

最终那些加工病毒工厂死亡，释放出更多病毒来感更多。

It’s teacher Rishi Rawat is feeding the computer more samples of cancer cells.

Rishi Rawat老师正在给计算机提供更多癌样品。

So loose connective tissues have fewer fibers, and more cells and more ground substance.

所以疏松结缔组织有更少纤维，更多和更多基质。

And they can do it because they're multicellular, which is a rarity in the microbial world.

它们之所以能够做到这一点，是因为它们是多，这在微生物世界中很少见。

Without these elements, plants can't make more cells or even function with the cells they have.

离开了这些元素，植物便无法产生更多，甚至无法发挥现有功能。

More cells equals more cell divisions.

更多等于更多分裂。

And more cell divisions means more chances of mutations that could let a cell become cancerous.

更多分裂意味着更多可能导致癌变突变。

Early multicellular life depended on the water in which it lived to support their skeleton-less bodies.

早期多生命依赖于它生活水来支撑它们无骨架身体。

But if you, say, get tossed off a moving motorcycle, you'll lose a lot more layers.

但是如果你从摩托车上摔下来，你会脱落更多层。

Several years ago, Albani and his team discovered it held the oldest fossils know of multicellular animals.

几年前，阿尔巴尼和他研究小组发现这里保存着已知最古老多动物化石。

Last year Shinya Yamanaka of Kyoto University won a Nobel prize for the invention of induced pluripotency.

日本京都大（Kyoto University）山中伸弥（Shinya Yamanaka）由于成功诱导多能性而于去年荣获诺贝尔奖。

As more and more skin cells are made in the matrix, the older cells are pushed out.

随着基质中产生越来越多皮肤，旧被排出来。

The tentacled Archaean uses proteins common to multicellular organisms and might lend insight into how the latter evolved.

这种有触角太古代微生物使用多生物共有蛋白质，这可能有助于我们了解后者进化方式。

IL-5, on the other hand, activates eosinophils which promote an immune response by releasing more cytokines and leukotrienes.

另一方面，IL-5激活嗜酸性粒，通过释放更多因子和白三烯来促进免疫反应。

If the T cell gets activated, it kicks into action, producing cytokines which helps to get other immune cells involved.

T在被激活后，开始合成分泌因子，进而调动其他更多免疫。

More cells survived, so the brain decayed less.

更多存活下来，所以大脑腐烂得更少。