Figure 1From: Global expression profiling of theophylline response genes in macrophages: evidence of airway anti-inflammatory regulationHierarchical clustering of the gene expression profile in macrophages with or without theophylline. 75 differentially expressed genes dose-dependently down- or up-regulated by theophylline were identified and further grouped into 8 categories. Relative expression levels of these genes are color-coded.Back to article page