Figure 1
Hierarchical cluster analysis of 76 differentially expressed genes in largest (F1) and second-largest follicles (F2). These genes were enhanced between at least two follicles by more than 20-fold. Red scale indicates relative higher expression level and green scale indicates relative lower expression level. The expression levels were transformed to log2 values. Dendrograms of sample axis (above matrix) and gene axis (to the left of matrix) represent overall similarities in gene expression profiles. Five follicles were classified into two major clusters (A and B). The follicles divided into cluster A were all F2 and the follicles divided into cluster B were all F1. The cluster A was characterized by highly expression of 31 genes, whereas the cluster B was predominately expressed 45 genes.