This Week in Science

In this week's Science, a team led by researchers at the Rockefeller University and Mount Sinai School of Medicine in New York report on the discovery that a single microRNA that is highly expressed in the brains of humans and mice is capable of controlling neuron excitability. The scientists created mice that expressed the small, non-coding RNA at different levels in their brains and found that underexpression of MiR-128 led to fatal seizures.

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