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Matrix metalloproteinase-2 (MMP-2), a member of gelatinases, is particularly important in the digestion of nonfibrillary and denaturated collagens; thus, it may play a role in tissue remodeling and in the invasion of malignant cells. The expression of MMP-2 has not yet been described in preneoplastic lesions of the larynx thus far. The purpose of this study was to evaluate whether the expression of...