News

  1. Mice smell a mate’s immune system

    By sniffing molecules present in urine, mice gain insight into each other's immune systems.

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  2. Health & Medicine

    TB vaccine gets a needed boost

    An experimental vaccine against tuberculosis imparts significant immunity, but only in people who have previously received the existing bacille Calmette-Guérin vaccine for TB.

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  3. Astronomy

    Gamma view of a big blast

    Astronomers have for the first time used extremely high-energy gamma rays to image a celestial body.

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  4. Health & Medicine

    Sleeve worn on heart fights failure

    A new mesh wrap can be placed around an expanded and weakened heart to restore the organ to an efficient, elliptical form.