RU-486 Shows Breast Cancer Prevention in Mice

New research conducted on mice suggests that RU-486 — the so-called "abortion pill"— could be helpful in preventing breast cancer. But there's a long way to go before doctors know whether the treatment will work for humans.

Madeleine Brand speaks with medical contributor Dr. Sydney Spiesel, a practicing physician who also writes a medical column for the online magazine Slate.

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