Great @carlzimmer article on #mosaicism. However, its scale is much less than natural or cancer variation http://nyti.ms/15ymYlJ MT @darnelr
Might have been worth mentioning that the amount of somatic variation in healthy cells appears to be considerably less than the variation between people or between a tumor and normal genome.
http://www.nytimes.com/2013/09/17/science/dna-double-take.html
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