Hierarchal clustering of differentially expressed genes between HDM-treated C57BL/6<sup><i>Mthfr</i>-/-</sup> and HDM-treated C57BL/6.

<p>ANOVA analysis identified 2,588 transcripts that are differentially expressed between the four experimental groups. Gene clustering by similarity in expression as quantified by the Pearson correlation using average linkage hierarchical clustering show groups of genes related to <i>Mthfr</i> status as well as treatment dependent clusters.</p>