Fig. 5.
AMs in Op/Op mice spontaneously express MMPs.
AMs from Op/Op mice showed positive staining for MMP-2 (A), MMP-9 (C) and MMP-12 (E). Some of the cells showed particularly dark intracytoplasmic staining for MMP-2 and MMP-9 (white arrows). In contrast, few cells from control mice showed positive staining for these enzymes (B,D,F) (× 450).