Fig. 4

The phage–bacterium specificity networks between the identified gut phages and the inferred hosts. Only large scaffolds (≥ 10 kb) were considered. Spacers were extracted from CRISPR arrays and used to probe the corresponding phage scaffolds. Both phage and bacteria scaffolds were taxonomically assigned to the genus level. The networks were visualized by Cytoscape software. The width of the edges is proportional to the number of spacers of a bacterial scaffold paired to a phage scaffold. Only the bacterial scaffolds that could be assigned taxonomically were included