Figure 1.

PCA plot for sample clustering and the heat map of differentially expressed genes of five cohort microarray datasets. (A) PCA plot for sample clustering of microarray datasets without batch effect adjustment. (B) PCA plot for sample clustering of microarray datasets with batch effect adjustment. (C) The heat map of the top 30 differentially expressed genes in response vs non-response IBD patient. The vertical axis represents the top 30 regulated genes (26 down-regulated genes and 4 down-regulated genes), and the horizontal represents a total of 142 samples.

Abbreviations: PCA, principal component analysis; DEG, differentially expressed genes.