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We report the first digital microfluidic (DMF) system capable of impedance sensing of mammalian cells. The new system was validated in three assays: calibration, proliferation, and serum sensing. In the first assay, three cell lines (HeLa, CHO-K1, and NIH-3T3) were seeded at different densities to determine the relationship between impedance and cell number, which was found to be linear for each type...
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