Archive: 08/7/2008

A positive-feedback system ensures that cells divide

(PhysOrg.com) -- In the life of every cell, there’s a point of no return. Once it enters the cell cycle and passes a checkpoint known as “Start,” a cell will follow the steps it needs to divide — no matter what changes ...

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Scientists create 20 disease-specific stem cell lines

(PhysOrg.com) -- Harvard Stem Cell Institute researcher George Q. Daley, associate director of the Stem Cell Program at Children's Hospital Boston, has with HSCI colleagues Chad Cowan and Konrad Hochedlinger of Massachusetts ...

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Putting microRNAs on the stem cell map

Embryonic stem cells are always facing a choice—either to self-renew or begin morphing into another type of cell altogether. It's a tricky choice, governed by complex gene regulatory circuitry driven by a handful of key ...

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Clean 3-way split observed

In chemistry as in life, threesomes are not known to break up neatly. And while open-minded thinkers have insisted that clean three-way splits do happen, nobody had actually witnessed one – until now.

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Forward step in forecasting global warming

Arizona State University researchers have made a breakthrough in understanding the effect on climate change of a key component of urban pollution. The discovery could lead to more accurate forecasting of possible global-warming ...

dateAug 07, 2008 in Earth Sciences
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Fingerprints provide clues to more than just identity

Fingerprints can reveal critical evidence, as well as an identity, with the use of a new technology developed at Purdue University that detects trace amounts of explosives, drugs or other materials left behind ...

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