Hierarchal clustering and principal component analysis of RNA profiles of five neighboring hyphae. (a, b) Hierarchal clustering (a) and principal component analysis (PCA) (b) were done on the basis of the 2,608 probe sets that had a present call in at least one of the single hyphae. Clustering was done using complete linkage as clustering method with 1-correlation as distance measure. The Z-scores of the log2 RMA signal values of the 2,608 probe sets were used for clustering and PCA.
de Bekker et al. Genome Biology 2011 12:R71 doi:10.1186/gb-2011-12-8-r71