FIGURE 3.

The differentially represented viral species among the three groups. (a) Heatmap of the 45 discriminative species’ abundances among the young, adult, and old age‐groups (LDA > 2.0). Species (raw) were sorted at the family level, and samples (column) were sorted by age. Color intensity (blue to yellow) indicated the score‐normalized abundance for each species. (b) The absolute and relative proportion of discriminative species in different families. The intestinal viral species from the monkeys were dominated by phages, the overwhelming majority of which were from the Caudovirales order, which comprised Myoviridae (42.22%), Siphoviridae (31.11%), and Podoviridae (13.33%) families. (c) Scatter diagrams showing the relative abundances of the age‐related Myoviridae, Siphoviridae, and Podoviridae families, as determined by Spearman's correlation analysis