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Putting the Brakes on the Immune System

Your immune system protects you from bacteria and viruses, but you need specialized cells to protect you from your immune system. Overaggressive immune responses can cause everything from autoimmune diseases to organ rejection. Now, scientists have identified a new group of these specialized cells that seem to keep the immune system in check--at least in the short term...

from ScienceNOW Daily News

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Our Dying Forests: Beetles Gnaw Through Utah, West

Bozeman Pass, Mont. -- A gray-whiskered former fly-fishing guide waded through a horse pasture whacking weeds for his neighbor, the rumbling machine in his hands slicing thistles and sparing a robust tangle of grass and wildflowers, while on mountain ridges all around him, the trees silently died. Beetles...

from the Salt Lake Tribune

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Tabletop X-Rays Light Up

The pressurized, cylindrical chamber fits in the palm of Margaret Murnane's hand. Yet out of one end of the device comes an X-ray beam that packs almost as much punch as the light generated by massive particle accelerators...

from Nature News

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Evidence That Man Cured of HIV Harbors Viral Remnants Triggers Confusion

Only one person ever has been cured of an HIV infection, and a presentation about the man at a scientific meeting in Sitges, Spain, last week has caused an uproar about the possibility that he's still infected...

from ScienceNOW Daily News

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At Home in the Universe

When Lewis and Clark started exploring the West, they didn't know much about what lay beyond St. Louis. Neither, at first, did astronomers know much about cosmic realms beyond Uranus...

from Science News

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Microbes Beam Electrons to Each Other Via Mineral "Wires"

Bacteria can use minerals in soil as electrical grids, which helps the microbes generate chemicals they need to survive, a new study says. The process involves different bacterial species trading electrons--negatively charged subatomic particles....

from National Geographic News

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Naturally Resistant HIV Foils Therapy

HIV's rapid mutation rates can lead to the evolution of drug resistance in HIV-positive patients receiving antiretroviral therapy, but naturally occurring resistance mutations can also accumulate to establish highly resistant HIV strains, according to new models published today (June 7) in PLoS Computational Biology. If true, the models suggest new interpretation for why HIV drug therapy can fail right off the bat.

from the Scientist (Registration Required)

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