News
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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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Health & MedicineTB 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.
By Nathan Seppa -
AstronomyGamma view of a big blast
Astronomers have for the first time used extremely high-energy gamma rays to image a celestial body.
By Ron Cowen -
Health & MedicineSleeve 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.