Time-series gene expression profiles in AGS cells stimulated with Helicobacter pylori

Figure 1 Hierarchical cluster analysis of time-series gene expression alteration after infection of Helicobacter pylori at 5 time points. Genes that significantly changed during infection were included in hierarchical clustering analysis using average linkage and Euclidean dissimilarity methods. Significant clusters A and B show the details of genes including name of the gene down-regulated at 4 h and up-regulated at 6 h. Eighty of the most differentially expressed genes were clustered in C. Immunity and tumor related genes are labeled.