Gene expression level for a subset of candidate genes in the abomasal lymph node of each allelic group 30 days post-infection by H. contortus. A boxplot of the gene expression levels is provided for each of the considered allelic group. The horizontal bar within the box is the median value while open circles indicate values falling above the upper (or below the lower) quartile plus (minus) 1.5 times the interquartile distance. Ri and Ni are the infected resistant and susceptible lambs while Ru and Nu are the non-infected control resistant and susceptible lambs. Asterisks indicate suggestive (p < 0.05, shown as “*”) or significant (p < 0.01, shown as “**”) differences between groups.