Fig. 4From: Selective cytotoxicity of a Vietnamese traditional formula, Nam Dia long, against MCF-7 cells by synergistic effectsFa-CI plot of NDL in MCF-7 cells. A CI of 1.0 (dashed line) reflected additive effects, whereas CI values greater than 1.0 and less than 1.0 indicate antagonism and synergy, respectivelyBack to article page