Body & Brain

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microscope image of plaques in a human artery

HAZARDOUS CLUMPS  The protein collagen (green) coats plaque (red) on the wall of a human artery. These small pockets of plaque are vulnerable to breaking away and possibly triggering a heart attack. 

depression

DARK DAYS  A controversial new study concludes that major depression does not afflict more people during winter months.

gas-sensing capsule

CAPPED  This 3.5-by-1.2-centimeter capsule can be swallowed to measure gut gases and send its findings to a smartphone. Researchers in Australia tested the device in pigs fed different amounts of fiber.

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