The aim of this stu dy was to investig ate the expression of MMP-2,MMP-9,TIMP-1,and TIMP-2in b reast carcinomas and to seek their relationship with breast cancer invasion,metastasis ,and prog nosis.

• 本研究探讨MMP-2、MMP-9和TIMP-1、TIMP-2的表达与乳腺癌侵袭、转移和预后的关系。