Application of a Promising Bone Graft Substitute in Bone Tissue Regeneration: Characterization, Biocompatibility, and In Vivo Animal Study

Figure 4

Histological images of the investigated samples after 14 days of healing. (a) Group I: local HA with S. hermanni collagen. (b) Group II: only S. hermanni collagen. (c) Group III: only normal collagen (the osteoblasts are indicated by yellow and black arrows).

(a)

(b)

(c)