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Expression of matrix metalloproteases in samples with ductal breast cancer and metastatic ganglia. Immune-chemistry with labeled matrix metalloproteinases MMP-1, MMP-3, MMP-9, and the metalloproteinase tissue specific inhibitor TIMP-1 in ductal breast cancer samples; (a) with metastasis, (b) without metastasis, (c) metastatic lymphatic ganglia diagnosed by trans-surgical H&E, and (d) placental tissues were negative controls. Magnification 400x.
