Scientists at the University of Pìttsburgh, PA have managed to grow a functioning mouse heart from pluripotent stem cells. These are adult stem cells that act like embryonic stem cells. The team achieved this by stripping the mouse heart of its cells and replacing them with human cells. The heart then began to beat just as before. This could then lead to stem cells being used in the future for human organ transplants. Although there are a number of ethical issues surrounding the use of stem cells. This technological advance could be used to replace heart tissue damaged during a heart attack.
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