After we had seen how relatively easy it was to change the switches in mouse embryos, we thought that perhaps the same could be true of human embryos. In IVF, you also have the embryo for a brief peri

发表于:2018-12-07 / 阅读(65) / 评论(0) 分类 基因外遗传现象

I can see the muscles that make up my face, my skull, and my own brain. So, now I can take you on that journey into my ear in a way that’s never been possible before. This time we can fly straight t

发表于:2018-12-07 / 阅读(55) / 评论(0) 分类 生命物语

Scientists Come Closer to Creating Laboratory Embryos An international team of scientists says it has moved a step closer to creating artificial embryos. The team used stem cells from mice. Stem cells are simple cells that can develop into other kind

发表于:2018-12-17 / 阅读(38) / 评论(0) 分类 2018年VOA慢速英语(八)月

Can Babies Be Designed? We hear a lot nowadays about designer babies. The idea that parents can choose the genes of their children sounds frightening. The question we have to answer is: how much can w

发表于:2018-12-30 / 阅读(56) / 评论(0) 分类 英语沙龙2004全年合辑上

He became rather technical; spoke of the abnormal endocrine co-ordination which made men grow so slowly; postulated a germinal mutation to account for it. 他相当专门化地谈起了使人生长迟缓的内分泌失调问题,并提出萌芽期突变

发表于:2019-01-01 / 阅读(46) / 评论(0) 分类 美丽新世界

The spidery steel-work of gallery above gallery faded away in all directions into the dark. 一层层蜘蛛网样的钢架长廊从各个方面往黑暗里模糊了去。 Near them three red ghosts were busily unloading demijohns from a moving stairc

发表于:2019-01-01 / 阅读(67) / 评论(0) 分类 美丽新世界

Next to the Liners stood the Matriculators. 生产线工人旁边是收纳员。 The procession advanced; one by one the eggs were transferred from their test-tubes to the larger containers; 流水线继续前进;卵子一个个从试管转入更大的

发表于:2019-01-01 / 阅读(52) / 评论(0) 分类 美丽新世界

Is Cloning the Future? 克隆一个你? Saving lives has always been an important mission of science. Now science, and indeed all society, is facing a new dilemma:whether or not to try and save more lives through human cloning. The first cloning ex

发表于:2019-01-02 / 阅读(46) / 评论(0) 分类 双语有声阅读

We use those in my field of bone marrow transplantation. 我们把这些干细胞用于骨髓移植领域。 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

发表于:2019-01-03 / 阅读(91) / 评论(0) 分类 TED演讲科学篇

1. South Carolina Coroner's Office says a combination of smoke inhalation and burns killed the nine firefighters inside a burning furniture store in Charleston. They died after the roof collapsed on top of them. Investigators say arson is not suspec

发表于:2019-01-08 / 阅读(103) / 评论(0) 分类 美联社新闻一分钟2007

不少准妈妈们都为宝宝做过三维或四维彩超,并给宝宝们拍下人生中的第一张照片。而试管宝宝们如今更可以拥有自己胚胎细胞时期的珍贵影像,这就是细胞拍。 It is the latest trend in baby pictu

发表于:2019-01-08 / 阅读(80) / 评论(0) 分类 英文语法词汇

Stem cells are prised for their ability to give rise to a variety of specialized cell types, including heart, liver, nerve and bone. Unfortunately, it's the stem cells from embryos that have shown the biggest potential, for generating both a range of

发表于:2019-01-20 / 阅读(70) / 评论(0) 分类 Scientific American(六)月

He had often seen it before. When you're bigger, she had said, you can read it. Well, now he was big enough. 那书他以前常看见。你长大以后,她说,就可以读了。好了,现在他长大了。 He was proud. I'm afraid you won't fin

发表于:2019-01-29 / 阅读(33) / 评论(0) 分类 美丽新世界

Beating Heart Tissue from Stem Cells In a study in the journal Science, researchers explain how they used mouse embryonic stem cells and microchip technology to create heart muscle tissue that actually beats. Cynthia Graber reports One of the goals o

发表于:2019-01-30 / 阅读(116) / 评论(0) 分类 60秒科学

26 茎细胞对于疾病治疗的神奇功效 DATE=5-24-01 TITLE=SCIENCE REPORT - Progress in Stem Cell Research BYLINE=Caty Weaver (Start at 59

发表于:2019-01-30 / 阅读(170) / 评论(0) 分类 自然探索

今天我们要学的词是ethical。 Ethical, 合乎伦理道德标准的。 Elected officials should be held to the highest ethical standards, 民选产生的官员应该遵守最高标准的伦理和道德准则。 美国总统奥巴马星期一签署

发表于:2019-02-04 / 阅读(68) / 评论(0) 分类 英语单词荟萃

During the weekend, 2 couples and their families invited the media newspapers, TV and radio to interview them about embryo donation. The first couple had two teenage boys and the second couple had a 3-month old baby girl. Couple 1s 16 year old son wa

发表于:2019-02-06 / 阅读(73) / 评论(0) 分类 新西兰英语

本期内容: Precise chemical surgery has been performed on human embryos to remove disease in a world first, Chinese researchers have told the BBC. The team at Sun Yat-sen University used a technique called base editing to correct a single error

发表于:2019-02-13 / 阅读(64) / 评论(0) 分类 夏说英语新闻晨读

In East China's Jiangsu province, a local court has rejected a request by four parents to inherit frozen embryos that were left behind by a couple who died in a car crash. Now for more on the issue, we are joined in the studio by Professor Hao Ran, d

发表于:2019-02-18 / 阅读(51) / 评论(0) 分类 CCTV9英语新闻2014年05月

Science and technology 科学技术 The 2012 Nobel prizes 诺贝尔生理学奖 Good eggs 再生医学界的大好人 THIS year's Nobel physiology prize goes to Sir John Gurdon and Shinya Yamanaka for a crucial discovery in stem-cell science?how to m

发表于:2019-02-24 / 阅读(76) / 评论(0) 分类 经济学人科技系列