Figure 3From: Characterization of the effect of sample quality on high density oligonucleotide microarray data using progressively degraded rat liver RNAHierarchical clustering of significantly changed genes from samples progressively degraded by different tissue handling conditions. Sample labels are concatenated from handling condition, time of incubation, RIN, and study code. Log2 ratios calculated for each sample relative to the average of three zero-time controls are mapped on a green (-1) to red (1) color scale.Back to article page