GO analysis of gene expression differences between antrum and corpus samples in different patient groups. The ontologies were grouped based on pattern of difference in Hp-, and then further subdivided manually for functional similarity (g1-g7). The “All” column indicates two-tailed analysis, while the results for up-regulation in antrum tissue are shown in the “Antrum” column, and up-regulation in corpus tissue is shown in the “Corpus” column. Arrows indicate the fraction of expression direction of gene member in each ontology (Up arrows = all genes were up-regulated in Corpus, Down arrows = all genes were up-regulated in Antrum). The arrow was drawn when p-value < 0.01. The color-coding indicates the p-values for enrichment of each ontology; i.e. green equals p-values = 10-1, and red equals p-values = 10-8.