My wife and I have been thinking quite a bit about umbilical cords, and not just because our first child is due in a few weeks. There's been a lot of news lately about the blood that remains in umbilical cords after they are cut; this fluid is a rich source of stem cells that can be used to treat a variety of diseases, from leukemia to sickle-cell anemia. Two weeks ago, the New England Journal of Medicine reported that children with a fatal genetic disorder called Krabbe's disease had been saved with stem cells from cord blood. And last week the...
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