Fig. 2

The expression of transforming growth factor (TGF)-β1 (a), type I TGF-β receptor (TGF-βRI) (b), type II TGF-β receptor (TGF-βRII) (c), and vascular endothelial growth factor (VEGF) (d) in human gingival fibroblasts in response to curcumin. Cells were seeded at 6 × 105 cells per plate and treated with varying concentrations of curcumin or DMSO for 24 h. Gene expression was determined by quantitative polymerase chain reaction. The data are presented as the mean ± standard deviation