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Polarization colors of thick fibers in degrees of epithelial dysplasia in OSF. Kruskal-Wallis test p=0.14. Mann Whitney test - No dysplasia versus mild dysplasia p=0.5, mild dysplasia versus moderate dysplasia p < 0.001, moderate dysplasia versus severe dysplasia p <0.001, severe dysplasia versus OSF with carcinoma p=0.11
