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Human Clone Experiment Repeated Successfully 
10/19/2005 5:09:31 PM

The only researchers to publicly show that they have cloned a human embryo said on Tuesday that they had successfully repeated the experiment, growing an embryo to the 16-cell stage. Researchers at Advanced Cell Technology of Worcester, Massachusetts, have also repeatedly created embryos using a process called parthenogenesis -- using only a human egg cell and no sperm, and without cloning. The company says the experiments, reported in the January issue of Wired magazine, are not breakthroughs but a natural progression of its efforts to create human embryonic stem cells to use for medical treatments.
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