British scientist grow human heart valve from stem cells

British scientists have grown part of a human heart in a breakthrough that offers hope for millions of cardiac patients.
Such artificially-grown tissue could be used to replace damaged heart valves within just three years.
In the future, larger sections of tissue could repair heart attack damage, prolonging and improving the quality of life of tens of thousands of individuals in the UK alone.
In less than a decade, it may be possible to grow an entire human heart - cutting the need for transplants.