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Matrix metalloproteinase-9 (MMP-9) and tissue inhibitor of metalloproteinase-1 (TIMP-1) mRNA expression in the cortex of rats with cerebral infarction (in situ hybridization, × 200).
MMP-9 and TIMP-1 mRNA expression in the cortex was significantly greater in the urokinase group than in the model group. Arrows indicate positive expression. MMP-9 and TIMP-1 mRNA-positive cells exhibit a brown cytoplasm.
