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Antibacterial effects of the Rb-SA/PAAm gel against Streptococcus and E. coli. A, E) Control group. B, F) 0Rb-SA/PAAm group. C, G) 50Rb-SA/PAAm group. D, H) 100Rb-SA/PAAm group. Histogram of colony formation of I) Streptococcus and J) E.coli.