IL-10 and TNF production capacity in malaria patients. The IL-10 and TNF production capacity were measured after LPS and PHA stimulation as described in Methods. Fold increases from spontaneous cytokine secretion i.e. un-stimulated samples are presented as box plots: the box shows the interquartile range, the line through the box is the median and whiskers indicate the 5th and 95th percentiles. Statistical significance was determined by Mann–Whitney test. * denotes P ≤ .05; ** denotes P ≤ .01; # denotes P > .05.