Figure 1

Hierachial cluster and principal component analysis of tumor classes. A. Two-way hierachial cluster of 16 tumor classes by the 641 transcript signature. The tumor classes are shown at the top of the cluster and the transcripts are clustered at the left side. B. Principal component analysis (PCA) of primary tumors and known metastases based on the signature. The tumor classes are colored and indicated in association with the corresponding tumor samples.