Results of unsupervised clustering methods. A) Dendrogram resulting from two-dimensional hierarchical clustering of all genes across all patient samples performed using Euclidean distance metrics and average linkage clustering algorithm. B) Two-dimensional PCA plot of all expression data showing the separation of samples forming N1 group. Patients from M, N1 and N2 groups are shown in blue, black and red, respectively.
Čížková et al. BMC Genomics 2008 9:38 doi:10.1186/1471-2164-9-38