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Comparison of inhibition zone of different solutions against E. coli and S. aureus bacteria. (1) PEG; (2) AgNPs solution (0.1 M AgNO3 with PEG); (3) Distilled water; (4) ZnONPs solution (0.2 M Zn(CH3COO)2·2H2O with distilled water); and, (5) ZnONPs solution (0.4 M Zn(CH3COO)2·2H2O with distilled water).
