ρ0206_A and ρ0206_B cells were stained with mitoSOX and analyzed by confocal microscopy. DIC, Differential Interference Contrast. Scale bar, 25 µm. Quantification of the MitoSOX fluorescence intensity described in (A). Data are presented as mean ± SD (n = 3 independent experiments, 20 cells per experiment), statistical significance was assessed by student's t-test, **p < 0.01. 