Ethical questions raised by Korean embryonic stem-cell cloning

17 May 2005

The South Korean team of scientists led by Professor Woo Suk Hwang who made the headlines following the publication of a paper in Science outlining the production of embryonic stem cell lines from cloned human embryos (see newsletter item from February 2004) are now at the centre of controversy over the source of the human egg cells used for the experiments. The paper reported the use of 242 eggs from 16 anonymous women donors; other researchers have expressed surprise at the large supply of eggs, because the treatments required to induce super-ovulation in donors are painful and carry associated risks, making recruitment of volunteers to donate eggs difficult. One of the paper

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