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Macroscopic and microscopic structural characteristics of both collagen-based materials (MG and BG). A1 and B1 show cross-sections of the analyzed materials (A=MG) and (B=BG), A2 and B2 show the ultrastructure of the compact surface of MG and BG respectively, while A3 and B3 highlight the corresponding spongy side of the used materials. Magnifications: A1 and B1 x100; A2-3 and B2-3 x200 (scale bar=200 μm). MG=Mucograft. BG=BioGide
