Table 2.

Number of DE genes and probesets, occurring from comparison of BD gene expression profile and control expression profile. Genes are characterized as overexpressed when they present positive FC > |0.37| in log₂ scale and as downregulated when they present negative FC, respectively. Out of 45000 probesets and 33000 genes of the Affymetrix HG-U133A GeneChip, we derived a much smaller number of probesets and genes.

Disease versus control	Overexpressed genes	Downregulated genes	Total DE genes	Total probesets
BD versus control	303	732	1035	1162