Figure 7. The G2 and M phase clusters. Clusters of genes from Figure 3B involved in mitotic processes are shown in more detail. The annotation is as described in Figure 6. A. The tubulin gene cluster (NODE481X) contains 18 clones (6 ESTs) that peak at G2 of the cell cycle. The coordinate expression of the a- and b- tubulins is notable. B. The Spindle Assembly cluster (NODE180X) contains 49 clones (22 ESTs); 88% have been assigned a phase of G2 and many of the known genes are involved in establishment and maintenance of the mitotic spindle. C. The Mitotic Surveillance cluster (NODE191X) contains 50 clones (13 ESTS) that primarily peak in G2/M. The full clusters with all gene names, phase assignments and annotations can be viewed in Supplementary Figure 13.