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Cytotoxicity results (MTT assay) for graphene oxide (GO) and carbon nanofibers (CNFs) dispersed in isotonic saline solutions, isotonic saline solution with zinc (positive control) and isotonic saline solution (negative control) in the presence of human keratinocyte HaCaT cells at 37 °C for 3 h. No statistically significant (p < 0.01) differences of cell viability were found between the negative control and GO or CNF sample cultures.
