Figure 1

Global gene expression depicted as a principal component analyses (PCA, covariate) showing the A) PC1 and PC2 and B) PC1 and PC3, illustrating the effect of six hours post-AOM on proximal and distal sections of the rat colon (AOM distal▲, AOM proximal ■, saline distal “light gray triangle symbol” and saline proximal “light gray square symbol”).