Fig. 6From: Extracellular matrix stiffness controls osteogenic differentiation of mesenchymal stem cells mediated by integrin α5Integrin α5/β1 expression analysis of total proteins during osteogenic differentiation. Protein levels in whole cell lysates determined by western blotting. *P < 0.05. **P < 0.01. n = 3. ERK extracellular regulated protein kinases, FAK focal adhesion kinase, GAPDH glyceraldehyde 3-phosphate dehydrogenase, GSK3β glycogen synthase kinase 3βBack to article page