Figure 4.

The dependence of log fold change on signal intensity (M versus A plots). (a)M versus A plot before the second normalization step and (b) after a loess fit at the probe set level. FC in the key denotes the spiked-in fold change value.

Choe et al. Genome Biology 2005 6:R16   doi:10.1186/gb-2005-6-2-r16
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