Figure 1 of Zhang, Mol Vis 2012; 18:2961-2975.

Figure 1. Cluster analysis of differentially expressed genes. Probe sets were grouped by STEM software into eight clusters that were statistically significant. The notations “13 w,” “16 w,” and “adult” on the x-axis represent different time points. The numbers at the upper right indicate the number of genes belonging to each cluster and the p value significance.