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EEOS Reduced MMP Aactivity. The HNSCC cell lines were treated with 0.4 mg/ml EEOS for 48 h and the MMP activity in the conditioned media of (A) HN30 and HN31 cells, and (B) HN4 and HN12 cells were detected using zymography. GeneTools software was used to quantify the gelatinolytic bands of (C) MMP-2 and (D) MMP-9 activity. Bars represent means±SEM (n=3). * indicates p < 0.05 compared with the control
