Figure 2.

Percentage of weight loss in the three tested matrices after the different immersion periods of up to 50 days in: (a) PBS, (b) trypsin and (c) C. histolyticum collagenase. Values are shown as mean and standard deviation. Statistical significance is shown with lower-case letters for differences between matrices over the same degradation test, and with capital letters for differences between degradation tests within the same membrane. Student–Newman–Keuls tests were performed for multiple comparisons (p < 0.05).