Synergistic Effect of Mesoporous Silica and Hydroxyapatite in Loaded Poly(DL-lactic-co-glycolic acid) Microspheres on the Regeneration of Bone Defects

Figure 7

The histological images after implantation by VG staining. (a) 4 weeks; (b) 8 weeks; (c) 12 weeks. The bone, cartilage tissue, and residual materials were stained red, purple, and black, respectively (Nb: new bone; C: cartilage tissue; R: residual materials).

(a)

(b)

(c)