Table 1 Summary of QC LMS controls. Theoretical fold-changes for the spike-in control probes in the QC LMS data set are shown. M values have been rounded to 2 decimal places.
From: Empirical array quality weights in the analysis of microarray data
Control (abbreviation) | Ratio R:G | M= log2(R/G) |
|---|---|---|
Up-regulated 3-fold (U03) | 3:1 | log2 3 = 1.58 |
Up-regulated 10-fold (U10) | 10:1 | log2 10 = 3.32 |
Down-regulated 3-fold (D03) | 1:3 | -log2 3 = -1.58 |
Down-regulated 10-fold (D10) | 1:10 | -log2 10 = -3.32 |
Dynamic Range (DR) | 1:1 | log2 1 = 0.00 |