Research Article

Combined Optimized Effect of a Highly Self-Organized Nanosubstrate and an Electric Field on Osteoblast Bone Cells Activity

Figure 4

The level of (a) alkaline phosphatase; (b) total protein, and (c) ALP/total protein ratio on the different types of substrates, in nonstimulated and electrically stimulated osteoblasts.
(a)
(b)
(c)