Research Article

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

Figure 2

SEM images of three composites: (a, d, and g) PLGA-nHA, (b, e, and h) PLGA-MSN, and (c, f, and i) PLGA-MSN/nHA.