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Body & Brain

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neutrophils

ON TRACK  Neutrophils (red) crawl along the walls of capillaries in a mouse lung (tracks shown in blue). In mice deficient in a key protein, these immune cells couldn’t move as far (left) as those in mice that had the protein (right).

mouse brain

ALL TANGLED UP  In a healthy mouse (left), nerve cells (white) that release serotonin extend through the hippocampus. But when a specific gene is knocked out, those nerve cell wires clump together (right).

girl getting HPV vaccine

SURE SHOT  In the United States, HPV vaccination rates lag for girls and boys. The message that the vaccine prevents cancer isn’t getting out there, researchers say.

Body & Brain

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