Fig. 3.

K-means cluster containing genes that are down-regulated on nutrient downshift and/or up-regulated on nutrient upshift. Experiments (from 16 genome prints) are indicated on the x axis and are described more fully in ref. 1. Numbers indicate the times after shift at which samples were taken. Log ratios of expression after shift to before shift are indicated on the y axis. Purple lines show data for individual genes and the pink line shows the average. Two additional K-means clusters with similar expression patterns are shown in Fig. 6.