Fig. 2.

Differential expression of total genes in breast cancer. Volcano plots of genes expression analysis accomplished by Edge R method. In the x-axis the log₂ fold change respect to normal tissue is represented, while in y-axis the -log₁₀ of FDR is shown (the higher values show smaller FDR). Observe that HSP genes with log₂ fold change > 1 and FDR < 0.05 are indicated as red circles. The green symbols at the top of the subpanels indicate genes with very small FDR (FDR < 5e^− 324). Significant fold changes of non-HSP genes are light blue coloured