RGD Peptide-Grafted Graphene Oxide as a New Biomimetic Nanointerface for Impedance-Monitoring Cell Behaviors

Figure 8

EIS detection of inhibition effect of the LPS on the HPLFs proliferation on RGD-GO-modified ITO microelectrode. (a) Nyquist plots responses recorded after addition of LPS with different final concentrations for 24 h. (b) Impedance frequency responses recorded after addition of LPS with different final concentrations for 24 h. The arrow shows the frequency where the maximum impedance change is induced by LPS. (c) Inhibition effect of the LPS on the HPLFs determined by the proposed EIS cell biosensor and colorimetric CCK-8 assay. ().

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