Fig. 2

The number of common genes obtained from blood and substantia nigra (SN) expression profiling datasets visualized by a Venn diagram. a The number of downregulated genes in expression profiling datasets from blood; b The number of upregulated genes in expression profiling datasets from blood; c The number of downregulated genes in expression profiling datasets from SN; and d The number of upregulated genes in expression profiling datasets from SN