
Transcriptional response of human endothelial cells infected by different strains of R. prowazekii. (A) Venn diagram illustrating the number of genes of endothelial cells differentially expressed in response to different R. prowazekii strains as compared with uninfected cells. (B) Transcriptional response analyzed by RNA microarrays. Modulated genes (fold change ≥ 2) were compared by unsupervised hierarchic clustering analysis.











