World's first cloned rabbit born in Beijing |
文章来源： 文章作者： 发布时间：2007-08-02 06:48 字体： [ 大 中 小] 进入论坛 |
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Chinanews, Beijing, Aug. 1 – Last month, the National Center for Molecular1 Genetics and Breeding of Animals announced that the world's first body cell cloned rabbit had been born in Beijing. So far, the cloned rabbit is in a healthy condition and its weight has now reached 2 kilograms, the Beijing Science and Technology News reported.
Body cells cloning technology has always been regarded as a breakthrough in cloning technology. In 1996, when the first body cells cloned sheep Dolly was born, the news excited the whole world. Since then, scientists have been wondering how they can produce a cloned rabbit through body cells cloning technology. The cloned rabbit born in Beijing is the first cloned rabbit through body cells cloning technology.
Dr. Li Shangang, who initiated3 the research, chose to use the foetus rabbit to do his experiment. The pregnant cycle for this foetus rabbit was 20 days. He took the body cells from the back skin of the rabbit for cultivation4. The cultivated cells were then induced with serum5 hungry treatment. The nucleus6, which carried genetic2 materials, was then injected into the enucleated oocytes of a rabbit embryo7. When the embryo split into 4 embryonic8 cells, the cells were then injected into the womb of a female rabbit. The cells, after growing in the womb for 28-32 days, finally produced a cloned rabbit. Scientists got the cloned rabbit by applying caesarean section to the parent rabbit.
“When the cloned rabbit was born, it looked blue all over. There were wrinkles all over its body. However, when it grew up, it really looks cute now,” Professor Li said. Before, he always wore a serious look on his face. When talking about the baby rabbit, his face began to show a glimpse of smile. “The world’s first body cells cloned rabbit now has pure white furs all over its body. It now weighs 2 kilograms. It stays closely with its mother and is very healthy.”
All smiles, Li told this reporter that when Ian Wilmut, the father of cloned sheep, visited his laboratory, he simply wished him “good luck.”
点击  收听单词发音
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1
molecular
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| adj.分子的；克分子的 |
参考例句： |
- The research will provide direct insight into molecular mechanisms.这项研究将使人能够直接地了解分子的机理。
- For the pressure to become zero, molecular bombardment must cease.当压强趋近于零时，分子的碰撞就停止了。
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2
genetic
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| adj.遗传的，遗传学的 |
参考例句： |
- It's very difficult to treat genetic diseases.遗传性疾病治疗起来很困难。
- Each daughter cell can receive a full complement of the genetic information.每个子细胞可以收到遗传信息的一个完全补偿物。
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3
initiated
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| n. 创始人
adj. 新加入的
vt. 开始，创始，启蒙，介绍加入 |
参考例句： |
- He has not yet been thoroughly initiated into the mysteries of computers. 他对计算机的奥秘尚未入门。
- The artist initiated the girl into the art world in France. 这个艺术家介绍这个女孩加入巴黎艺术界。
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4
cultivation
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| n.耕作，培养，栽培（法），养成 |
参考例句： |
- The cultivation in good taste is our main objective.培养高雅情趣是我们的主要目标。
- The land is not fertile enough to repay cultivation.这块土地不够肥沃，不值得耕种。
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5
serum
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| n.浆液，血清，乳浆 |
参考例句： |
- The serum is available to the general public.一般公众均可获得血清。
- Untreated serum contains a set of 11 proteins called complement.未经处理的血清含有一组蛋白质，共11种，称为补体。
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6
nucleus
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| n.核，核心，原子核 |
参考例句： |
- These young people formed the nucleus of the club.这些年轻人成了俱乐部的核心。
- These councils would form the nucleus of a future regime.这些委员会将成为一个未来政权的核心。
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7
embryo
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| n.胚胎，萌芽的事物 |
参考例句： |
- They are engaging in an embryo research.他们正在进行一项胚胎研究。
- The project was barely in embryo.该计划只是个雏形。
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embryonic
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| adj.胚胎的 |
参考例句： |
- It is still in an embryonic stage.它还处于萌芽阶段。
- The plan,as yet,only exists in embryonic form.这个计划迄今为止还只是在酝酿之中。
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