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Viability of MDCK epithelial cells evaluated by the MTT test. Cell proliferation rate is plotted as a function of time for Col-CS (light green), Col-AgNPs 67 mg/g (red), Col-AgNPs 6.7 mg/g (violet), Col-AgNPs 0.67 mg/g (orange), Col-CS-AgNPs 67 mg/g (
), Col-CS-AgNPs 6.7 mg/g (
), Col-CS-AgNPs 0.67 mg/g (
). Viability rate in Col-CS were considered as 1. Results are expressed as mean ± SD from triplicate experiments. * Statistical significance (p < 0.05).
