Dendrogram of 125 samples on 5 genes selected for our discriminant model. Hierarchical clustering was carried out using Pearson correlation–based distance metric with Ward linkage on both genes and the samples. For visual enhancement, the gene expression values for each gene shown are converted to z scores. Patient samples are shown in red, untreated controls are shown in green, and Th1- and Th2-skewed controls are shown in light and dark blue, respectively. Yellow highlights indicate the samples that were misclassified by FLDA.