FIG. 3.

Dose-response curve for the inhibitory effect of EPO and H₂O₂ on the growth of M. tuberculosis H37Rv. The values are the means ± standard deviations of at least three experiments or the means of two experiments. (a) Symbols: ▪, number of CFU after 60 min of incubation at 37°C in the presence of EPO and H₂O₂ (final concentration, 0.25 mM); ▵, number of CFU after 60 min of incubation at 37°C in the presence of MPO and H₂O₂ (final concentration, 0.5 mM); ○, number of CFU after 60 min of incubation at 37°C in the presence of H₂O₂ alone. (b) Time course of the inhibitory effect of 0.2 μM EPO and H₂O₂ on the growth of M. tuberculosis H37Rv.