Fig. 2: Viral connections to human gut Bacteria and Archaea.
From: Metagenomic compendium of 189,680 DNA viruses from the human gut microbiome
a, Bar plots indicating the number of CRISPR spacers across 286,997 human gut Bacteria and Archaea, with the number of genomes indicated in parentheses. Each row indicates one host class containing at least 20 genomes and 100 spacers. The majority of CRISPR spacers are derived from Clostridia and Bacteroidia, reflecting their abundance in the human gut. b, Percentage of CRISPR spacers matching viral genomes with a maximum of one mismatch. c, Host genomes containing a CRISPR-spacer array, and those with a CRISPR-spacer array match to a viral genome. d, Genomes linked to a virus using a combination of approaches as indicated. e, Distribution of known viral families that are associated with each host class. Each host class is infected by a distinct repertoire of viral families.
