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Numbers of unique putative host species (A) and numbers of TSA-derived RdRps (B) for different classified pHMM clusters, separated by host species category as indicated in the key. Duplicate 100% identical RdRp core sequences were removed (as in fig. 5). Asterisk (*)—note that the majority of the metagenomic data sets are labeled as “gut metagenome” which is here counted as a single “species” name.
