Otter writes "Woo Suk Hwang's career swung from fame over his lab's claim of the first stem cells from a cloned human embryo to humiliation when the results were found to be fake. Research at Harvard on Hwang's cells has found that they are actually parthenogenic lines derived from eggs -- perhaps a more important and difficult achievement than what he had been claiming! 'Researchers said that the distinct "genetic fingerprint" of the stem cells means they may be the first in the world to be extracted from embryos produced by the so-called "virgin birth" method, or parthenogenesis. This happens when eggs are stimulated into becoming embryos without ever being fertilised by sperm, and has been achieved in animals. However, before Hwang, no one had managed to produce a human embryo using parthenogenesis which lived long enough to allow the extraction of viable stem cells.'"
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