Figure 2.

Illustration of the implementation of svdPPCS. A: The plots of the first four eigengenes of ACG data across ages. B: The plots of the first four eigengenes of MT data across ages. C: The distribution of genes among the five primary clusters (PCLs) based on the maximum projection rule for ACG data (red) and MT data (blue). D: The identification of co-expression modules by splitting a two-way chart. E: Determine the cutoffs a, b, c, and d based on SVD-p. F: The heatmap of a conserved gene module.