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Body & Brain

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IUD

SHAPE SHIFTERS  Current intrauterine devices, or IUDs, are T-shaped. But previous designs of the contraceptives included curlicues, s-shapes and an ill-fated spiked shield.

woman in labor

PRECONCIEVED NOTIONS  A decades-old idea about how quickly a woman’s labor should progress has not held up in recent studies.

Streptococcus pyogenes

BUGGED  In this scanning electron microscope image, Streptococcus pyogenes bacteria (yellow) are shown on top of a white blood cell. Different strains of the bacteria trigger a different reaction from the immune system thanks to extra genes that vary among strains.

Body & Brain

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