Figure 1From: Comparative transcriptomics in Yersinia pestis: a global view of environmental modulation of gene expressionEnvironmental modulation of expression of virulence genes. Shown in the squares are the putative stages of transmission/infection of Y. pestis. The TreeView charts show the transcriptional changes of the virulence genes, where columns represent different microarray experiments, and rows represent genes. Color intensities denote log2 ratios as follows: green, negative; black, zero; red, positive; gray, missing data.Back to article page