BBC: UK scientists say that human skin grown in a laboratory can replace animals in drug and cosmetic testing.
A team led by King's College London has grown a layer of human skin from stem cells - the master cells of the body.
Stem cells have been turned into skin before, but the researchers say this is more like real skin as it has a permeable barrier.
It offers a cost-effective alternative to testing drugs and cosmetics on animals, they say.
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