Fig. 5.

The amount of hydroxyproline released from crosslinked pericardium during incubation with collagenase III for 1 and 3 h. Pericardium was crosslinked with (a) glutaraldehyde at concentrations of 0.4, 0.04, 0.004, 0.0004, and 0.00004 M, (b) genipin 0.022, 0.011, 0.0044, 0.0022 M, (c) NDGA 0.013, 0.0066, 0.0033, and 0.0017 M, and (d) tannic acid 0.012, 0.0059, 0.0029, 0.0015, 0.00059, and 0.00029 M. Data are expressed as mean ± S.D., statistical significance was considered for p≤0.05 and was labelled above the column in comparison with the sample of the same number, from 3–6 samples of each group, statistical analysis ANOVA, Student-Newman-Keuls method.