Fig. (1) Gene expression of cells in normal medium determined by qRT PCR. Each cell type tested consisted of 3 lines derived by different donors (2 lines with DPSC) and each line was carried out in triplicate. Mean ± SD. Differences were analysed by 2-way ANOVA and significant differences tested by Bonferoni post test. * Significantly different from PDL at that time point P < 0.01. A) Asporin (ASPN); B) Periostin (POSTN); C) Nestin (NES) ; D) Cementum Protein-1 (CEMP1).