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Hair samples from infants show exposure to anti-HIV drugs in the womb and during breast-feeding Posted: 21 Jul 2012 05:31 PM PDT Researchers have used hair and blood samples from three-month old infants born to HIV-positive mothers to measure the uninfected babies' exposure—both in the womb and from breast-feeding—to antiretroviral medications their mothers were taking. The results, they said, are surprising.

Researchers produce first complete computer model of an organism Posted: 21 Jul 2012 06:14 AM PDT In a breakthrough effort for computational biology, the world's first complete computer model of an organism has been completed, researchers report. A team used data from more than 900 scientific papers to account for every molecular interaction that takes place in the life cycle of Mycoplasma genitalium, the world's smallest free-living bacterium.

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