NPR, September 20, 2018
Rob Stein

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Scientists say they have taken a potentially important — and possibly controversial — step toward creating human eggs in a lab dish.

A team of Japanese scientists turned human blood cells into stem cells, which they then transformed into very immature human eggs.

The eggs are far too immature to be fertilized or make a baby. And much more research would be needed to create eggs that could be useful — and safe — for human reproduction.

But the work, reported Thursday in the journal Science, is seen by other scientists as an important development. [...]

bioethics biotechnology genetics human tissue reproductive technologies research stem cells