Figure 2

Hierarchical clustering of differentially expressed RNAs. The microarray data for mRNAs that were identified to be differentially expressed between S and AS sub-lines (additional file 1: Table 1 and additional file 2: Table 2) were subjected to hierarchical clustering. The transcript profiles were very similar for both S sub-lines (each run in duplicate); whereas the two AS sub-lines differed from each other and from the S sub-lines. Lower case letters signify duplicate microarrays for each sub-line.