(SMH) — Scientists have replicated one of the most significant accomplishments in stem cell research by creating human embryos that were clones of two men.
The lab-engineered embryos were harvested within days and used to create lines of infinitely reproducing embryonic stem cells, which are capable of growing into any type of human tissue.
The work, reported in the journal Cell Stem Cell, comes 11 months after researchers in Oregon said they had produced the world's first human embryo clones and used them to make stem cells. Their study, published in Cell, aroused scepticism after critics pointed out multiple errors and duplicated images.
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In addition, the entire effort to clone human embryos and then dismantle them in the name of science troubles some people on moral grounds.