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Tuesday, July 11, 2006

Lab-made Sperm

In Germany, they've grown sperm from stem cells and then used it to successfully impregnate mice. (via Slashdot)
Using a specialised sorting instrument they were able to isolate some stem cells that had begun to develop as sperm.

They encouraged these early-stage sperm cells, known as spermatogonial stem cells, to grow into adult sperm cells and then injected some of these into female mouse eggs.

The fertilised eggs grew and were successfully transplanted into female mice and produced seven babies.

However, the mice showed abnormal patterns of growth, and other problems, such as difficulty breathing.

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