Scientists to grow human organs for transplant inside pigs
US Scientists are trying to grow human organs inside pigs in an attempt to tackle a shortage of donors have successfully created part-human, part-pig embryos. There are still major obstacles to replacing human organs with those of another species. "The immune response, or the rejection of a pig organ, is much stronger than the rejection of a human organ," says Julia Greenstein, president of Immerge Biotherapeutics in Boston. But researchers say they are solving that problem by genetically modifying pigs, which they plan to clone. And they are experimenting with pig cells that could help prevent the human immune system from rejecting the new organ.
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