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Effect of oral Aloe vera on tissue MMP-2 expression. (A) Immunohistochemical images of tissue MMP-2 expression. (B) Percentage of MMP-2 expression. DM: diabetic group; DM + AV: DM treated with oral Aloe vera group. Results are presented as mean ± SEM. ∗∗P < 0.01: significantly different from DM group.
