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本帖最后由 lucyliu8472 于 2013-7-14 11:43 编辑
 
39000前埋在冰川下的长毛猛犸象在东京展出。是史上发现最完整的长毛猛犸象。雌性，在西伯利亚的冰川下被发现的。
包括毛发，和被冻住的血液。
科学家在努力尝试，培养克隆长毛猛犸象，准备把胚胎植入到大象体内。
With its matted hair and bald patches it resembles a much-loved toy somewhat past her prime.
In fact this creature is the best-preserved specimen of a woolly mammoth ever found – whose prehistoric prime was 39,000 years ago.
Even clumps of the animal’s distinguishing hair are remarkably intact after being trapped in glacial ice until she was discovered in Siberia earlier this year.
She is now to go on public display in Yokohama, Japan.
But while the public can get a remarkable glimpse of our planet’s past, scientists will be continuing tests that could give the extinct species a future.
Experts who found the female mammoth in May also discovered a sample of its blood inside ice beneath the carcass – which scientists claim may be used to regrow one of the animals, which last walked the earth around 4,000 years ago.
Preserved muscle tissue was also found from the creature, which was aged between 50 and 60 when she died, according to the Russian team who made the discovery on islands off the northern coast of Siberia.
Semyon Grigoriev, from the North Eastern Federal University in Siberia, said: ‘We were really surprised to find mammoth blood and muscle tissue.’
He hailed it as ‘the best-preserved mammoth in the history of paleontology’.
Parts of the carcass are especially well preserved because they remained entirely frozen for thousands of years – including the hair.
However, the upper torso and two legs, which were entombed in the soil, have been gnawed by prehistoric and modern predators and almost did not survive.
It is the first ever well-preserved sample of blood from a woolly mammoth and has reopened the debate over the morality of Jurassic Park-style projects to restore extinct creatures to the planet
The blood and other samples have been made available to South Korean scientist Hwang Woo-suk’s private bioengineering laboratory.
The laboratory has confirmed it is working with other mammoth DNA samples in a bid to return the extinct Siberian mammoth.
The eventual plan is to plant an implanted egg into a live elephant for a 22-month pregnancy.
The hope is that at least one living cell of the mammoth was preserved ‘although even with such well-preserved remains, this may not be the case’.
Earlier this year a group of scientists from around the world met for the TEDx conference in Washington, sponsored by National Geographic.
The group were discussing the possibility of bringing 24 animals back from extinction, also known as ‘de-extinction’.
The animals included the dodo bird, the Carolina Parakeet, last seen in 1904 in Florida.
The Quagga, a plains zebra which once lived in South Africa but died out in 1883.
However, some scientists insist it will be impossible to create the same mammoths as once roamed the earth.
原文： http://www.dailymail.co.uk/scien ... l?ito=feeds-newsxml
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管理人员评分多糖 在2013-7-12 17:37 +10分 并说
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窗台上的鸢尾花 (2011-8-28) 明河素月 
我老公的两次撞车经历（补全第二次） (2005-6-22) 水月 
发表于 2013-7-12 15:13
