AIM:To investigate the relationship between the expression of urokinase type plasminogen activator(u PA) mRNA in giant cell tumors of bone(GCT) and pathological grading and recurrence of GCT.

• 目的:研究骨巨细胞瘤(giantcelltumorofbone,GCT)组织尿激酶型纤溶酶原激活剂(urokinase-typeplasminogenactivator,u-PA)系统mRNA的表达与GCT病理分级和复发的关系。