Objective: To study the relationship between expression of matrix metalloproteinase 2 (MMP 2) and biological behaviors and tumor metastases in breast cancer.

Objective To observe the relation between the change of arterial wall shear stress and the expression of matrix metalloproteinase 2 (MMP-2), and analyze its role in aneurysm formation.

Objective To study the inhibition of vibramycin on the expression of matrix metalloproteinase 2 (MMP 2) and the invasiveness of androgen independent prostatic carcinoma cell line PC 3 in vitro.