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AGE STAGE  By about 2 years old, mice that age normally (back left) are hunchbacked and nearly blind. A treatment that removes decrepit “senescent” cells makes mice the same age (front right) healthier: They look and act younger and live longer.


DOING THE MATH  Spots like those on a cheetah’s coat may be governed by rules laid out by computer scientist Alan Turing. A developmental cell biologist now offers a slightly different take on Turing’s equations to explain how cell interactions may create natural patterns.

obese person's waist

CELLS INTERRUPTED  Disrupting the body’s daily rhythms can lead to obesity. New research on fat cell development may explain why.

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