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(A) Taxonomic distribution of free-living protozoa, based on 18S rRNA gene clones retrieved from distributed water of supplies CA-1, CA-2, and CA-3. (B) Taxonomic distribution of OTUs with highest similarity to free-living protozoa retrieved from distributed water of supplies CA-1, CA-2, and CA-3. Data are totals for all analyzed samples of distributed water of the indicated supply.
