The relative expression of interleukin-10 (IL-10) (A), interferon gamma (IFNγ) (B) and IL-10 to IFNγ mRNA ratio (C) in duodenal biopsies of healthy control children (HC, n = 10), celiac disease children (CD, n = 10) and treated celiac adults (T-CD, n = 6). Boxplot shows 25th to 75th percentile with a line at median and the whisker represents interquartile range. Samples which are outside 1.5 times the interquartile range above the upper quartile (3rd quartile) and below the lower quartile (1st quartile) are denoted by circles. A) IL-10 expression is significantly different between HC and CD. B) IFNγ expression is significantly different between HC and CD or T-CD. C) The ratio of IL-10/IFNγ expression is significantly different between HC and CD or T-CD. The significance between study groups: *p < 0.05.