Figure 1.

Distinction of the different subtypes of RCC by gene-expression profiling. Shown is an unrooted dendrogram of 68 renal gene-expression profiles derived from clear-cell (CC), chromophobe (CR), oncocytoma (ON), papillary type 1 (P1), papillary type 2b (P2b), and urothelial (UR) tumour samples. Also included are data derived from nondiseased renal tissue (NO). Hierarchical clustering is based on the log2-transformed gene-expression values from 8407 genes that have an overall interquartile range greater than 0.5. The dendrogram was produced with Euclidian distance and complete linkage clustering.