Network representation of the relationship between gene expression and gene function. Thirty-nine gene expression clusters (broad and restricted) together with the most significantly enriched GO terms and Uniprot domains (italicized) are organized in two-dimensional space by a force directed layout as in Figure 9. The strength of links between expression clusters and GO/Uniprot terms is determined by the level of enrichment of the GO/Uniprot term within the expression cluster (using z-scores in Additional data file 8). The strength of links between pairs of expression clusters and pairs of GO/Uniprot terms are determined by comparing similarity with respect to the opposite class (so that expression clusters are compared with respect to the GO/Uniprot terms they have similarity with, and vice versa; see Materials and methods). Expression cluster representative in situ images: Cl1B CG12792; Cl2B CG4567; Cl3B CG4078; Cl4B CG2656; Cl5B CG3227; Cl6B CG7375; Cl9B CG8464; Cl10B CG13349; Cl1R CG3246; Cl2R CG8066; Cl3R CG2233; Cl4R CG4829; Cl5R Osi14; Cl6R CG32209; Cl7R CG12676; Cl8R CG14756; Cl9R CG10527; Cl10R CG1246; Cl11R CG6337; Cl12R CG9468; Cl13R CG15651; Cl14R CG31764; Cl15R CG14762; Cl16R CG18675; Cl17R CG8888; Cl18R CG6429; Cl19R CG8780; Cl20R CG15209; Cl21R CG4468; Cl22R CG9925; Cl23R rib; Cl24R CG8147; Cl25R CG8965; Cl26R odd; Cl27R CG12177; Cl28R CG13653; Cl29R CG10967.