Source: http://feedproxy.google.com/~r/mnt/healthnews/~3/jnMw8LXOWrU/252994.php
Thursday 22 November 2012
DNA's Genetic Mosaic Revealed By Skin Cells
The prevailing wisdom has been that every cell in the body contains identical DNA. However, a new study of stem cells derived from the skin has found that genetic variations are widespread in the body's tissues, a finding with profound implications for genetic screening, according to Yale School of Medicine researchers. Published in Nature, the study paves the way for assessing the extent of gene variation, and for better understanding human development and disease. "We found that humans are made up of a mosaic of cells with different genomes," said lead author Flora Vaccarino, M.D...
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