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The antimicrobial activity of coated SNP agasint S. mutans serotypes in microgams per milliliter (µg/mL) according to serotypes and particle size. Values shown are the mean ± standard deviation. Clinical strains, 34 in number, (c = 20; e = 6; f = 1 and k = 7) were assayed. Asteriks indicate significant differences (p < 0.05).
