Figure 1.

Significant expression changes in peripheral blood leukocytes of Parkinson's disease patients compared to controls. (A) Schematic representation of the statistical analysis and the filters applied on the Affymetrix GeneChip Human Exon 1.0 ST Array exon-level expression data. The numbers of exon-level probesets remained after each filtering step are indicated in circles. (B) PCA mapping of patients and control samples according to the expression levels of the 206 significantly changed exon probesets.