Fig. 3

Effects of EGCG on ALP activity and extracellular matrix mineralization in hPDLCs. (A) Representative images of ALP enzyme staining after EGCG treatment for 7 d (n = 3); (B) Representative images of alizarin red S staining after EGCG treatment for 21 d (n = 3); (C) Quantitative analysis of ALP activity after EGCG treatment for 7 d (n = 5); (D) Quantitative analysis of alizarin red S staining after EGCG treatment for 21 d (n = 5). Data are presented as mean ± standard deviation. The bars with different lower case letters are significantly different from each other (p < 0.05), and those with the same letter exhibit no significant difference