Figure 9.

Vitality changes of primary rat chondrocytes incubated with hydrogen peroxide. Concentration-dependent effect of H₂O₂ on MTT viability (a) and combined fluorescence labeling of the cells with ethidium bromide and acridine orange (b, c). Images were captured 5 hours following incubation without (b) or with H₂O₂ (5 mmol/L, 400x) (c). Results are expressed as arithmetic mean with S.E.M. ^∗ p < 0.05 and ^∗∗∗ p < 0.001 with respect to control.