It is hoped that work of this kind will eventually enable scientists to turn mature cells back into stem cells which have the ability to become any type tissue in the body.

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There is real hope that stem cells will soon be available to regenerate tissue for any part of the body.

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Dalton is a leader in uncovering exactly what it is about embryonic stem cells that allows them to turn into any kind of tissue in the body.

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In a study from India, kidney transplant patients had crushed donor kidney tissue injected into their thymus - the body's "immune engine room" where cells can be "educated".

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Researchers highly value embryonic stem cells because of their potential to turn into any organ or tissue cell in the body.

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Embryos are awash with molecular signals which tell their few cells to divide and differentiate to become the many tissue types that make up the body.

ECONOMIST: Stem cells