Figure 2

Combination index plot of vitamin C combined with cimetidine with serial two-fold dilutions at a constant ratio (1:1) in the MCF7 human cell line. Values of the CI < 1 reflect synergistic interactions.

Combination index plot of vitamin C combined with cimetidine with serial two-fold dilutions at a constant ratio (1:1) in the MCF7 human cell line. Values of the CI < 1 reflect synergistic interactions.