New Blood Test May Transform the Way Cancer Is Monitored and Treated (image) Elsevier Share Print E-Mail Caption This figure illustrates how the assay can be used clinically. In this patient, the data enabled the investigators to count the number of DNA molecules containing the KRAS G12V mutation and, therefore, count the number of molecules that came from the patient's tumor. The green dots represent molecules found to contain the mutation sequence, and the blue dots represent wild-type normal DNA molecules. The information was derived from less than a nanogram of cell-free DNA. Credit Hanlee P. Ji Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.