Lineage trees for cells

Some fundamental outstanding questions in science -
"Where do stem cells originate?" "How
does cancer develop?" "When do cell types
split off from each other in the embryo?" - might
be answered if scientists had a way to map the history
of the body's cells going back to the fertilized egg.
Now, a multidisciplinary team at the Weizmann Institute
of Science has developed an analytical method that can
trace the lineage trees of cells.

Added: 2005.10.31 23:40:12

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