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Effect of integrin masking on LM induced MMP-9 secretion: MCF-7 cells (300,000 cells/ml) were treated without (lane 1) or with anti-α2 (lane 2), anti-α3 (lane 3), anti-α4 (lane 4) and anti-α5 (lane 5) integrin antibodies for 1 h and then allowed to grow in presence of 20 μg/ml LM for overnight. The culture supernatants were subjected to gelatin zymography
