Medical research

Stem cell studies tune into hearing regeneration

A deafened adult cannot recover the ability to hear, because the sensory hearing cells of the inner ear don't regenerate after damage. In two new studies, published in the Proceedings of the National Academy of the Sciences ...

Health

Study reveals unexpected importance of the thymus in adults

The thymus gland—which produces immune T cells before birth and during childhood— is often regarded as nonfunctional in adults, and it's sometimes removed during cardiac surgery for easier access to the heart and major ...

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