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Impedance scatterplot for a sample of the positive fraction of whole lysed blood after MACS enrichment (donor no.2). In (a), an estimated 74 MCF7s were spiked into 1 ml of whole blood. (b) shows the control experiment where no MCF7 cells were added. This scatter has the maximum number of events in the MCF7 gate for the control experiments—3 in this case.
