Fig. 6

Therapy with AAT lowers MMP-9-positive cells in colon cancer tissue. A. Representative images of MMP-9 staining in colon tissue for four experimental groups. The tissue fields at a magnification of 100 × and 400 × respectively. The black arrows indicate areas of MMP-9-positive cells. B. Bars show IHC score of MMP-9 based on the stain intensity (0 = no stain, 1 = weak, 2 = moderate; 3 = strong). A value of p < 0.05 was considered as significant