About 15% of all women who want to bear children fail to conceive, many of them because of defects in their fallopian tubes. In England last week there was a flurry of optimism about a successful treatment for some of these would-be mothers. A respected, pioneering obstetrician-gynecologist reported that in three cases a ripe egg cell had been removed from a wife and fertilized in a laboratory by sperm from her husband; then the resulting conceptus had been implanted in the wife's womb and she had given birth to a normal child. The three babies thus conceived are now from twelve...
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