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Cytotoxicity of C1A and sodium butyrate on cancerous M21 (a,b) and non-tumorigenic HEK293 (c,d) cells. Both cell lines were cultured in 96 well plates and treated with increasing concentrations of either C1A (a,c) or sodium butyrate (b,d). Cell viability percentages are relative to parallel control untreated cell cultures. The assay was repeated twice, in triplicates.
