Additional file 1.

Figures S1. and S2. Description: Figure S1, histogram of the distribution of the hydrodynamic diameter of PHMB-stabilized silver nanoparticles determined by dynamic light scattering. Figure S2, zeta potential of PHMB-stabilized silver nanoparticles based on electrophoretic mobility of PHMB-stabilized silver nanoparticles.

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Ashraf et al. Nanoscale Research Letters 2012 7:267   doi:10.1186/1556-276X-7-267