Fig. 3

Two-way hierarchical cluster analysis of 171 oral squamous cell carcinomas based on the expression of 23 proteins. Tumors were grouped into 2 clusters (A and B), based on the protein expression profile. Rows represent proteins, ordered according to their hierarchical distances. Colors in columns represent expression levels: red indicates positive staining, and green represents the absence of staining for each of the antibodies. Within each cluster, samples were ordered based on their correlation distances