Figure 5.

Conditions for the emergence of groups of related genes. (a) Groups of related genes found by clustering term-occurrence values. The color code is similar to the one used in Figure 2. (b) Grouping is conserved after gene names or terms making up gene names are removed from the analysis (for example, NFkappaB, RANTES, interferon, vascular, MIG). (c) Associations shown in (a) disappear when occurrence values are permuted for each of the genes, suggesting that associations made through the analysis of patterns of term occurrence do not arise by chance from a sufficiently high number of co-occurring terms.