Fig. 2

Representative histological images of the induced membranes. a Inflammation (HE), b fibrosis (HE), c foreign body reaction (HE), and d osteogenesis inside the induced membrane (HE). HE, hematoxylin and eosin staining. The scale bars represent a 100 μm, b 500 μm, c 100 μm, and d 250 μm