Methods The expressions of MMP-2 and MMP-9 were detected by SP immunohistochemiccal technique in 20 keloid patients and 15 hypertrophic scar patients.

• 方法免疫组织化学SP法检测MMP-2、MMP-9在20例瘢痕疙瘩、15例增生性瘢痕及10例正常皮肤中的表达,采用图像分析技术对免疫组化结果进行定量分析。