Methods The expression and activity of collagenase in hypertrophic scar and normal skin were studied with in situ hybridization and SDS-polyacrylamide gel electrophoresis.

• 方法应用原位杂交和SDS-聚丙烯酰胺凝胶加胶原底物电泳观测了肥厚性瘢痕组织中胶原酶表达、酶活性及胶原的降解。