Fig. 2From: Genotoxicity of micro- and nano-particles of kaolin in human primary dermal keratinocytes and fibroblastsMicronuclei formation in Chinese hamster ovary CHO AA8, primary normal human epidermal keratinocytes neonatal (HEKn) and primary normal human dermal fibroblast FJ cells after 6 h’ treatment with kaolin micro- and nano-particles. Mean ± S.D. values of three independent experiments are shown. In the graph, CT represents the solvent control (treatment with 0.005% (v/v) Tween 80). Concentrations are given in μg/mL. MMC represents a positive control (0.1 μg/mL mitomycin C) treatment. *Significant difference versus the solvent control at p < 0.05, †significant difference between particle size at p < 0.05, according to the Tukey-Kramer methodBack to article page