Fig. 4From: Influence of epigallocatechin-3-gallate in promoting proliferation and osteogenic differentiation of human periodontal ligament cellsRelative expression levels of COL1, RUNX2, OPN and OSX measured by qRT-PCR after treatment with EGCG for 7 d. Semi-quantitative analysis of relative gene expression levels. Data are presented as mean ± standard deviation (n = 5). 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 differenceBack to article page