Figure 6

Identification of gene clusters. (a) MDS plot based on correlation dissimilarity metric among 245 genes (each circle represents one gene), where 13 hub genes are indicated by red dots; (b) The proportion of variance that can be explained by clustering (y-axis) against the number of clusters (x-axis) based on different values of k (k =1,2,…,7) by k-means clustering method. From this plot, the most likely number of clusters is four.