Figure 2.

Scatter Plots of GeneChip Data. Each panel represents GeneChip data from one experimental group using M (log2 (average intensity of iron-deficient group/average intensity of control group)) vs. A ((log2 (average intensity of iron-deficient group) + log2 (average intensity of control group))/2)) plot. Differentially expressed genes (FDR < 0.04 and fold change > 1.5) are shown in color, including down-regulated genes (in green) and up-regulated genes (in red). Dashed lines indicate 2-fold change

Collins and Hu BMC Genomics 2007 8:420   doi:10.1186/1471-2164-8-420
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