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Sodium dodecyl sulfate-polyacrylamide gel electrophoresis analysis of the products resulting from the treatment of bovine collagen (1 mg ml−1) with enzyme. [Lane1, collagen; lane 2, collagen treated with collagenase from Clostridium histolyticum after 24 h; lane 3 and 4, collagen treated with NG155 supernatant after 0 and 24 h respectively]
