Figure 4From: Osteogenic differentiation of amniotic epithelial cells: synergism of pulsed electromagnetic field and biochemical stimuli OC protein expression was induced to rise during the osteogenic differentiation of AECs. (A) The expression of OC protein was analyzed by immunocytochemistry (magnification of 400×). (B) The integrated optical density (IOD) of OC was measured by ImageJ software. Experiments were performed three times with the similar results (n = 3 in each group). * indicates P < 0.05 vs Control, # indicates P < 0.05 vs PEMF and & indicates P < 0.05 vs OM.Back to article page