A new blood test can detect cancer by scanning DNA.
Doctors may soon be able to tell if someone has cancer and where the tumor is without even doing a biopsy.
New research from a team at University of California San Diego shows that evidence found in cancer blood tests can help doctors identify where the malignant cells are. The researchers developed a new way to screen for a particular kind of DNA in the blood cells that provides clues.
When a cancer tumor begins growing, it takes over territory normally occupied by healthy cells. Those cells are killed off as the tumor takes over space and deprives normal cells of nutrients. In the process, the dying cells release DNA into the bloodstream.
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