Daily News Central
July 10, 2006
Summary:
Researchers at a German university have used embryonic stem cells as the basis for creating artificial sperm in a laboratory setting. The team, led by Professor Karim Nayernia of Georg-August Unviersity in Gottingen, used special equipment to separate stem cells that had begun to turn into sperm. After these cells, called "spermatogonial stem cells," grew into adult sperm cells, scientists injected them into the eggs of female mice. The eggs became fertile and were then transplanted into another group of female mice, which gave birth to seven baby mice. All but one of the offspring survived to adulthood.
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