Up-regulation of mRNA levels in human chromosomal region 17q21.33-23.2 (patient counts with coordinate up-regulation). Grayscale cross-comparison plots of up-regulation patterns across patients (analogous to Figures 7, 10, 13). View this plot in conjunction with Figures 18 and 20. Note, that many more patients show up-regulation as indicated by dark spots in this plot than down-regulation as indicated by dark spots in Figure 20. This region has been reported in other studies to be frequently amplified in colon cancer (see Table 3).