Figure 1.

Examples of probe-level data. a) For a differentially expressed gene (cRNA spiked at 4-fold from the Choe et al. dataset, probe-set: 147419_at), b) a non-differentially expressed gene (cRNA at equal concentrations, probe-set: 149358_at), and c) a non-expressed gene (not in the pool of amplified cRNAs, probe-set: 142266_at). Quantile-normalized data from the control (circle) and spiked (+) samples are shown, including replicate data. Probes are ordered by the average intensity on the control replicates. For each probe-set, the value of T obtained from the linear model is shown.