A gene expression map for Caenorhabditis elegans

We have assembled data from Caenorhabditis elegans DNA microarray experimen ts involving many growth conditions, developmental stages, and varieties of mutants. Co-regulated genes were grouped together and visualized in a thre e-dimensional expression map that displays correlations of gene expression profiles as distances in two dimensions and gene density in the third dimen sion. The gene expression map can be used as a gene discovery toot to ident ify genes that are co-regulated with known sets of genes (such as heat shoc k, growth control genes, germ line genes, and so forth) or to uncover previ ously unknown genetic functions (such as genomic instability in mates and s perm caused by specific transposons).