Τρίτη 26 Νοεμβρίου 2013

Science News SciGuru.com

Science News SciGuru.com

Link to Science News from SciGuru.com

Using microRNA Fit to a T (cell)

Posted: 25 Nov 2013 03:04 PM PST

Researchers at the University of California, San Diego School of Medicine have successfully targeted T lymphocytes – which play a central role in the body’s immune response – with another type of white blood cell engineered to synthesize and deliver bits of non-coding RNA or microRNA (miRNA).

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Misfolded proteins are capable of forming tree-like aggregates

Posted: 25 Nov 2013 02:39 PM PST

A method by Rice University researchers to model the way proteins fold – and sometimes misfold – has revealed branching behavior that may have implications for Alzheimer’s and other aggregation diseases.

Results from the research will appear online this week in the Proceedings of the National Academy of Sciences.

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A possible cause of the end-Permian mass extinction: Lemon juice?

Posted: 25 Nov 2013 07:47 AM PST

Rain as acidic as undiluted lemon juice may have played a part in killing off plants and organisms around the world during the most severe mass extinction in Earth’s history.

About 252 million years ago, the end of the Permian period brought about a worldwide collapse known as the Great Dying, during which a vast majority of species went extinct.

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