Figure 2.

MTT assay results after 24 and 48 h of cells culture incubation representing mean values for different concentrations of AgNPs alone and in combination with a fixed 1/2 IC₅₀ (12.5 μg/mL) concentration of BER. AgNPs with BER inhibited significantly less the growth of SCC-25 in a dose-dependent manner which clearly demonstrates an attenuating effect of BER addition, particularly at 5 and 10 μg/mL concentrations (A–F). Differences of mean cytotoxicity values between different AgNPs concentrations alone vs. AgNPs/BER were significant (p < 0.05 and p < 0.01, ANOVA Friedman ANOVA test).