Figure 3.

Linear regression curve of the density of dead cells related to different ethanol concentrations in culture media. Dead cells were stained with propidium iodide and results are expressed as means of dead cells/area. The curve demonstrates a positive correlation between the concentration of ethanol in medium and the density of dead cells. Slope was significantly non-zero: F = 30.55, P value = 0.0312. Equation: Y (dead cells/mm²) = 0.09141 × (ethanol concentration) + 11.15. Bars indicate 95% CI.