Quantification of collagen and GAG.

The quantity of collagen was 228.68±72.32 μg/mg (dry weight) before decellularization and 158.70±50.17 μg/mg after decellularization. The quantity of GAG was 55.43±6.11 μg/mg (dry weight) before decellularization and 28.41±4.83 μg/mg after decellularization.脱细胞处理前，胶原蛋白（collagen）的质量含量为228.68±72.32 μg/mg（干重），脱细胞处理后为158.70±50.17 μg/mg。糖胺聚糖（Glycosaminoglycan, GAG）脱细胞处理前的质量含量为55.43±6.11 μg/mg（干重），脱细胞处理后为28.41±4.83 μg/mg。