Fig. 1From: Protective effect and related mechanisms of curcumin in rat experimental periodontitisEffects of curcumin on the cell viability of rat gingival fibroblasts. Cells were cultured with different concentrations of curcumin (0, 10 and 20 μM) in the presence or absence of 1 μg/ml lipopolysaccharide (LPS). Cell viability was determined by MTT assay. Curcumin was not cytotoxic to gingival fibroblasts at 10 or 20 μM (P > 0.05)Back to article page