Figure 4

Hierarchal clustering and PCA of RNA profiles of five neighboring hyphae. (a, b) Hierarchal clustering (a) and PCA (b) were done on the basis of the 308 probe sets that had a present call in at least one out of five hyphae and that showed a standard deviation > 0.5 between the signal values. 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 308 probe sets were used for clustering and PCA.