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Friday, January 6, 2012

ScienceDaily: Top Environment News

ScienceDaily: Top Environment News


Flatworm flouts fundamental rule of biology: Worm regenerates without centrosome, a structure long thought necessary for cell division

Posted: 05 Jan 2012 02:42 PM PST

A tiny, freshwater flatworm found in ponds and rivers around the world that has long intrigued scientists for its remarkable ability to regenerate has now added a new wrinkle to biology.

World’s first primate chimeric offspring produced: Research demonstrates not all embryonic stem cells are equal

Posted: 05 Jan 2012 01:47 PM PST

Scientists have shed new light on how early embryonic stem cells develop and take part in formation of the primate species. The research has also resulted in the first successful birth of chimeric monkeys -- monkeys developed from stem cells taken from two separate embryos.

Scientists 'hijack' bacterial immune system

Posted: 05 Jan 2012 11:58 AM PST

The knowledge that bacteria possess adaptable immune systems that protect them from individual viruses and other foreign invaders is relatively new to science, and researchers across the globe are working to learn how these systems function and to apply that knowledge in industry and medicine. Now, a team of researchers has discovered how to harness this bacterial immune system to selectively target and silence genes.

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