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Intensity and coverage of hyaluronidase (HYAL) 1–2 stainings in benign and dysplastic nevi, in situ melanomas, superficial (<1 mm) and deep (>4 mm) melanomas and lymph node (LN) metastases. Statistical differences between the groups are indicated by brackets. The statistical significance of the differences was tested with Mann–Whitney U-test. * p <0.05, ** p <0.01 and *** p <0.001.
