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Nanoceria favour the proliferation of normal keratinocytes but not of HaCaT or squamous cell carcinoma keratinocytes. Nanoceria (CNPs) were administered at day 0 to primary keratinocytes, HaCaT, and two squamous cell carcinoma keratinocytes cell lines (SCC 12 and SCC 15). Kinetics of viable (trypan blue excluding) cell number expressed as fold over day 0. Statistical significance was calculated via Student’s t-test. * p < 0.05, ** p < 0.01 with respect to untreated cells.
