Surgeons in London have used human embryonic stem cells in a pioneering attempt to cure blindness.

伦敦外科医利用人类胚胎干细胞治愈失明。

So I've studied a lot about stem cells embryonic stem cells are particularly powerful.

我对干细胞研究很多, 胚胎干细胞尤其强大。

Unlike tissue-specific stem cells, embryonic stem cells are pluripotent.

与组织特异性干细胞不同，胚胎干细胞有很多种功能。

Like embryonic stem cells, they, too, can become any kind of cell in the body.

类似于胚胎干细胞，它们也能够成为身体里任何种类的细胞。

Medulloblastomas originate from embryonic stem cells and they tend to be extremely aggressive.

髓母细胞瘤来源于胚胎干细胞，它们往往具侵袭性。

Stem cells found in embryos can spin off a wide range of tissue types.

胚胎干细胞可以分化成多种组织类型。

Geron, just last year, started the first trial using human embryonic stem cells to treat spinal cord injuries.

杰龙去年开始第一次尝试用人类的胚胎干细胞治疗脊髓疾病。

Japanese researchers have grown teeth and even organs with embryonic stem cells from rats and mice.

本研究人员已经利用老鼠和小鼠的胚胎干细胞培育出了牙齿和胰腺、肾脏等器官。

Until now, two kinds of stem cells of human sources have been known: embryonic stem cells and adult stem cells.

目前已知的人类干细胞有两种：胚胎干细胞和成体干细胞。

Embryonic stem cells are created from leftover embryos that are willingly donated by patients from fertility clinics.

胚胎干细胞可以从多余的胚胎细胞中获得，这些胚胎细胞是由育诊所里一些愿意捐赠的患者那里获得的。

Embryonic stem cells, in particular, are “pluripotent”, meaning they are able to become any other type of cell.

“多能的”胚胎干细胞被再医学家们寄予厚望，所谓“多能”就意味着这些干细胞可以分化出多种其他类型的细胞。

These are regular skin, fat, liver, or other cells that scientists have changed to behave like embryonic stem cells.

这些细胞可以是普通的表皮、脂肪、肝或者其他种类的细胞，而科学家们已经能够将它们转变为具有胚胎干细胞功能的细胞。

Clinical trials of pluripotent cells are already happening, though they hark back to the days when only cells derived from embryos were available.

多能细胞的临床试验其实早已开始进行，只是这种多能细胞还是由胚胎干细胞所培养（这在当时也是唯一可用的技术）。

Instead of animals, scientists are now testing on human tissues that are grown in a lab from embryo stem cells.

科学家们现在正在实验室中用胚胎干细胞培养的人体组织而不是动物进行测试。

This is the embryonic stem cells are derived from the material that has its own quantifiable issues around risk of cancer.

这是胚胎干细胞来自于有自身可量化的关于癌症风险的物质。

Unfortunately, it's the stem cells from embryos that have shown the biggest potential, for generating both a range of tissues and a ton of controversy.

不幸的是，只有胚胎干细胞的分化潜能是最大的——无论是产一系列组织还是一大堆争论。

In November, for example, a company in California cancelled what had been the first trial of human embryonic stem cells, in those with spinal injuries.

例如，去年11月，一家位于加州的公司取消了原定的首例人胚胎干细胞在脊髓损伤者身上的试验。

The models are made from stem cells — simple cells in the body that can develop into one of many specialized cells.

胚胎模型是由干细胞制成的，干细胞是体内可以发育成多种特化细胞之一的简单细胞。

The models are made from stem cells – simple cells in the body that can develop into one of many specialized cells.

胚胎模型是由干细胞制成的，干细胞是体内可以发育成多种特化细胞之一的简单细胞。

Dr Schwartz and his team coaxed embryonic stem cells to become retinal pigment epithelium tissue which supports the rod and cone cells that actually respond to light

他的团队诱导胚胎干细胞成为视网膜色素上皮组织细胞－其中的杆细胞及锥晶细胞对光线敏感。