Fig. 3From: Suppression of Breast Cancer Cell Migration by Small Interfering RNA Delivered by Polyethylenimine-Functionalized Graphene OxideAverage particle size and zeta potential of PEI-GO analyzed by dynamic light scattering. a The average particle diameter of 1 mg/ml PEI-GO was compared at 4, 25, and 37 °C. b The zeta potential of 1 mg/ml PEI-GO was compared to that off pristine GO at 25 °C and neutral pH. Error bars represent standard deviations (n ≥ 3)Back to article page