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furthermore , we used the most effective innate antibacterial material as an anticancer treatment . The zeta potential is a vital factor for antibacterial and anticancer mechanic , at pH 3-7 , the zeta potential of chitosan was positive piece at pH 7-12 were negative , however , the zeta potency for GO was minus at all pH values , which ( p 0 ) increased in the GO-CS composite . Chitosan immersions ( 0 and 1 % ) exhibited antibacterial activeness against BC with inhibition zone diameters of 4 and 12 mm ,