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Absorbance values for HEI-OC1 cells on a 6 day MTT time-course after exposure to GNPs. HEI-OC1 cells were incubated with three concentrations of GNPs: 0 (Green), 50 μM (red) and 100 μM (Blue) for up to 6 days. The Vybrant® MTT cell proliferation assay protocol was followed. This procedure was conducted in triplicate and demonstrated that GNPs have a minimal effect on cell viability.
