Table 1 Comparison between the variability introduced by hybridization and staining effects alone, the cDNA synthesis and transcription process, and cross-platform comparisons. Each value represents the percentage of probesets in each quantile of the array where measurements diverged more than 2-fold from the mean.

Highest chip-values

0.012%

0.27%

0.048%

Middle chip-values

0.88%

1.6%

1.31%

Lowest chip-values

6.4%

9.0%

13.0%

Total

7.3%

10.9%

14.1%