1. Human Cloning
There also has been a breakthrough with human stem cells. University of Wisconsin-Madison developmental biologist Gearhart says he's confirmed the presence of hematopoietic cells -- cells that can form any blood cell -- among the descendants of the embryonic stem cells. Since the stem cells are the ancestors of all blood cells- red and white-one of their first clinical uses could be restoring the blood system after certain cancer treatments. Since blood stem cells can form the CD-4 immune cells that are killed by HIV, the AIDS virus, doctors might be able to replace these essential disea...
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