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  1. Sugar Coated: Molecular dress-up may disguise gut bacteria

    The mammalian immune system doesn't attack native gut bacteria as foreign invaders because the bacteria disguise themselves with sugar molecules.

    By Christen Brownlee

  2. Schizophrenia Syncs Fast: Disconnected brain may lie at heart of disorder

    A misalignment of electrical outbursts by large numbers of neurons may play a major role in schizophrenia.

    By Bruce Bower
  3. Animals

    Vampires Run: Bats on treadmills show high-speed gait

    The first test of vampire bats on a treadmill shows that they've evolved their own style of running.

    By Susan Milius

  4. 19528

    You may be aware that nanoparticles from sources such as diesel engines have clearly been shown to be a major component of the exposures causing thousands of human deaths in the London smog of 1952.