Fig. 1From: Combinatorial therapy of chitosan hydrogel-based zinc oxide nanocomposite attenuates the virulence of Streptococcus mutansCell viability of human gingival fibroblast cells (HGFs) after treatment with chitosan hydrogel (CS gel), zinc oxide nanocomposite (ZnONC), and chitosan/zinc oxide nanocomposite hydrogel (ZnONC-CS) with different concentrations up to 72 h. The values were recorded as total number of living cells. Error bars represent standard deviation. * P < 0.05 compared to the untreated sampleBack to article page