GEB displays for gene expression microarray data. (A) Histograms showing demonstration data on the distribution of differentially expressed genes across mouse chromosome 11. The width of each bar is 1 Mb. Red and blue bars correspond to upregulated and downregulated genes respectively. The "gene number" panel shows the number of DEGs in a given Mb, while the "gene %" panel shows the percentage of DEGs out of all genes in that Mb. (B) Physical map display showing DEGs (indicated by arrows) from a 1 Mb region (102–103 Mb) in more detail. Genes are colour coded depending on whether they are upregulated (red), downregulated (blue), or unchanged in expression (black). Genes with no data in expression appear green (default colour for physical map displays). Stringency of gene expression thresholds for DEGs can be adjusted in real-time using the sliding bars on the left: "Pos" (positive) for upregulated genes, "Neg" (negative) for downregulated genes. The colour of genes will change accordingly.