Word: nucleus
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...woolly mammoth, but science has been buzzing about it lately, ever since researchers announced that they had sequenced 80% of its genome. That gave rise to chatter about whether a cloned mammoth could ever be born. Serious cloning science began in 1952, when researchers first reported transferring a tadpole nucleus into an ovum and producing identical tadpole copies. In 1995, biologist Craig Venter sequenced the genome of the Haemophilus influenzae bacterium, the first living organism whose genes were decoded. In 1997, cloning made stop-the-presses headlines when embryologist Ian Wilmut announced that he had cloned a sheep. Venter grabbed...
...Though Dolly the sheep was the first clone to be shoved into the limelight, in 1996, the process of human-directed cloning has existed since 1952. In that year, American researchers Robert Briggs and Thomas King successfully removed the nucleus of a tadpole's embryonic cell and transferred it to a donor cell, cloning 27 tadpoles in the experiment. This groundbreaking achievement landed the scientists the internationally lauded Charles Leopold Mayer Prize of the Académie des Sciences, making them the first Americans in history to receive the award. (Read TIME's first story about Dolly...
...Cigarette warning labels not only do not deter smoking but actually encourage smokers to light up. The reason? The nucleus accumbens, or the "craving spot" in the brain, is stimulated by the sight of the warning...
...sources for inspiration, be it China or genetic engineering. At the same time, Roche's bosses, from their base in Basel, continue to lead the pack in acquiring expertise, a talent recently seen in the company's bid to control biotech superstar Genentech. Together, the two strategies form the nucleus of how Roche plans to deliver best-in-class products--faster, more cheaply and more reliably--to market. "The days of an attrition-based pipeline are over," says Lee Babiss, head of global pharma research. "We've responded by making R&D much more efficient...
...hard to get a teenager off the couch and working on that all important college essay? You might blame it on their immature nucleus accumbens, a region in the frontal cortex that directs motivation to seek rewards. James Bjork at the National Institute on Alcohol Abuse and Alcoholism has been using fMRI to study motivation in a challenging gambling game. He found that teenagers have less activity in this region than adults do. "If adolescents have a motivational deficit, it may mean that they are prone to engaging in behaviors that have either a really high excitement factor...