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Histological views of defect sites in the 100k and 300k EI-BCM groups. New bone formation and fibrous connective tissue were observed at 4 weeks (A,B,E,F) and at 8 weeks after surgery (C,D,G,H), and were mainly observed around membranes and old bone. The black rectangles indicate the new bone area in Figure 10 and the white boxes represent the EI-BCMs in Figure 11 (original magnification: 12.5×; (A,C,E,G) H&E stained; (B,D,F,H) M&T stained).
