Fig 2. Hierarchical cluster analysis of gene expression alteration of control H. pylori strains under iron-replete and limited conditions.

Each strain was cultured with DFM (iron-limited condition, indicated as TH3-F, TH7-F, TH4-F, and TH6-F) or without DFM (iron-replete condition, indicated as TH3, TH7, TH4, and TH6). The genes with significant differences in expression were included in hierarchical clustering analysis using average linkage and Euclidean dissimilarity methods. Genes with a Fur-binding site consensus sequence are indicated in pink.