Fig. 3From: Mechanical and degradation properties of advanced platelet-rich fibrin (A-PRF), concentrated growth factors (CGF), and platelet-poor plasma-derived fibrin (PPTF)Enzymatic degradability of A-PRF, CGF, and PPTF membranes. Each membrane disk (φ8 mm, 1 mm thick) was immersed in PBS containing trypsin and incubated in a CO2 incubator. N = 4. The asterisks represent significant differences (P < 0.05) compared with A-PRF at the same time pointsBack to article page