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The Boston Globe

Science

Researchers find protein that rejuvenates aging mouse hearts

A team of Harvard Stem Cell Institute scientists have discovered a protein that circulates in blood that can turn old hearts young, causing a mouse’s heart that has thickened and enlarged with age to revert back to a more youthful state.

The researchers hope that the discovery will lay a foundation for a new approach to therapy for a common form of heart failure that strikes elderly people, although much more research is needed before it could be tested in people.

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