In Vitro Biocompatibility and Osteoblast Differentiation of an Injectable Chitosan/Nano-Hydroxyapatite/Collagen Scaffold

Figure 4

Real-time PCR analysis of osteoblast-specific gene expression. Values were normalized to 18 s rRNA expression and shown relative to gene expression on (b) for comparison. (a) OCN, (b) RUNX-2, (c) COL-1. The values are shown as mean±standard deviation (𝑛=3). Bars with dissimilar letters indicate significantly different values (*𝑃<0.05, **𝑃<0.01).

(a)

(b)

(c)