Figure 4.

Functional categories affected by differential gene expression in ras knockout fibroblasts stimulated with serum. Bars represent percentage of total number of differentially expressed probesets (Tables S4 to S9 in Additional data file 1) corresponding to the indicated functional categories in H-ras^-/-, N-ras^-/- and H-ras^-/-/N-ras^-/- fibroblasts (see the legend in the figure) that were subjected to starvation and subsequent stimulation with serum (FBS) for 1 hour (upper panel) or 8 hours (lower panel). IFN, interferon.