MG-infection suppressed ATPase activities in chicken thymus. Panels A –D show the effect of MG-infection on Mg ++-ATPase, Ca ++-Mg ++-ATPase, Ca ++ATPase and Na + -K + -ATPase activities, assessed at the three time points. Experimental groups are represented as control group and MG-infection group. Bar graphs represent mean results ± SD (n = 3). *P < 0.05 represents statistically significant difference compared to the control group.