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. 2020 Oct 6;7:586146. doi: 10.3389/fmolb.2020.586146

FIGURE 6.

FIGURE 6

The combined effect of 5 or 6 with TMZ in glioma cell lines. Cell growth inhibition by TMZ in single and combined treatments with 5 and 6 in C6, RC6, U87, and U87-TxR cells determined by MTT assay. Mean values ± SEM were obtained from three independent experiments (n = 3). Statistical significance to TMZ alone: p < 0.05 (*), p < 0.01 (**), p < 0.001 (***), and p < 0.0001 (****). The interactions between 5 or 6 and TMZ was analyzed by CalcuSyn software. CI < 1 indicates synergistic effect, while CI close to 1 point to additive effect.