Figure 2

(A) Unsupervised hierarchical clustering of HDAC and metabolic cofactor gene expression profiles in human brain tumor and non-tumoral (controls) samples. Subgroups identified by cluster analysis are highlighted by horizontal lines for genes and by vertical lines for brain tumor samples. Increased gene expression is represented by the red color and decreased expression in blue. The intensity of the color represents the degree of expression. The same clustering analysis was performed separately for ODII tumor samples (B), ODIII (C), ODII and ODIII together (D) and GL (E).