It’s the beginning of the age of liquid biopsies, when less invasive, regular blood draws will provide more information than the occasional solid tissue biopsy. Companies that offer tests based on circulating tumor cells or cell free DNA in the blood are popping up like genome interpretation companies were a few years ago. As our understanding of biology at the molecular level advances--particularly in the field of cancer research--the more this practical and focused approach for teasing out the information in the cell, in the body gains steady adoption.

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