Fig. 3.

Level of kynurenine. The level of kynurenine was determined in the absence or presence of Toxoplasma gondii infection and following a 24-h treatment with nanoparticles and/or trolox. [A] Level of kynurenine determined in the absence of T. gondii infection; [B] Level of kynurenine determined in the presence of T. gondii infection; [C] Level of kynurenine determined in the absence of T. gondii infection but in the presence of 100 µM trolox; [D] Level of kynurenine determined in the presence of T. gondii plus 100 µM trolox. Data are expressed as the mean ± SEM (n = 3); α is significant at p < 0.05 and γ is significant at p < 0.0001 relative to the control. ‘hpi’ is hours post-infection.