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lambs

WOMB WITH A VIEW  A lamb at 107 days of gestation (left) — equivalent to about a human fetus at 23 to 24 weeks gestation — matured normally in an artificial womb. Right is the same lamb 28 days later. Such devices may one day help premature babies survive outside the bodies of their mothers.

family visiting newborn baby

THE HERD The cocooning strategy, in which people who will be in contact with a newborn all receive vaccinations to protect the vulnerable baby, may not be that protective after all. Better protection against whooping cough comes from vaccinating a mother during pregnancy, scientists say.

mouse hippocampus

YOUTHFUL GLOW  In the hippocampus of a 1-month-old mouse, some nerve cells (red) produce the protein TIMP2 (green), which declines with age and may help keep the brain young. Blue indicates microglial cells.  

Body & Brain

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