Figure 3.

PDGF-BB at 30 ng/ml Significantly Stimulated Caco-2 and SW480 Cell Proliferation at 72 h. Caco-2 and SW480 cells were stimulated by PDGF-BB proteins at variable concentrations (10, 20, 30 and 40 ng/ml) for 48 h (A and C) and 72 h (B and D). The cell viability was measured using MTS assay. The values are presented as mean ± SD compared with the control, n = 3, *P < 0.05 and **P < 0.01