MMP9 and endometriosis: MMP-9 and MMP-2 levels increased substantially (3400.8 and 3005.6 ng/mg protein, respectively) in control rats with endometriosis (Fig. 2, P < 0.033) compared to the sham-operated control, whereas in groups III and IV, combined atorvastatin and amygdalin treatment significantly reduced MMP-2 levels, to 16.4% and 38.1%, and MMP-9 levels, to 20.6% and 39.4% (Fig. 2, P < 0.027).