Representative plain radiographs of pasteurized bone grafts at 2 weeks (A-C), 4 weeks (D-F) and 12 weeks (G-I) after grafting are shown. Pasteurized bone with (MC+; FGF2-) (A, D, G), (MC-; FGF2-) (B, E, H) and (MC-; FGF2+) (C, F, I) is shown. Arrows show the anterior portion of the proximal interface between grafted bone and host bone for observation. Bone formations at the edge of the host bone can be seen in all 3 groups (A-C). Mild bone absorption can be observed on the (MC+; FGF2-) graft at 4 weeks (D). Massive bone absorption can be observed on the (MC+; FGF2-) graft (G, right) and on the (MC-; FGF2-) graft (H) at 12 weeks. Bone incorporation with a bridge of bone formation from the host bone can be seen on the (MC-; FGF2+) graft (I).