BBC News reports that muscle wasting linked to old age might one day be treated using stem cells, claim US scientists.

A University of Colorado team transplanted cells into mice and saw the muscle more than double in size – staying that way even into old age.

They say their work, reported in Science Translational Medicine, may have promise in treating muscle-wasting conditions such as muscular dystrophy.

A UK expert said producing a human treatment might be difficult.

Stem cells are cells found in the body which can divide and become a variety of different types of tissue.

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