Evaluation of Guided Bone Regeneration in Critical Defects Using Bovine and Porcine Collagen Membranes: Histomorphometric and Immunohistochemical Analyses

Figure 2

Photomicrographs of sections stained with HE, 30 and 60 postoperative days with a greater increase (CG, BCG, and PCG) (original 12.5x magnification).