Figure 1. Bootstrap consensus phylogenetic tree for aligned small subunit rDNA sequences from Blastocystis spp. isolated from shelter-resident canines and felines, and previously published representative sequences, using Proteromonas lacerate as an outgroup.

The tree was derived using the Maximum Likelihood method based on a Tamura 3-parameter model, with 1500 bootstrap replicates. Numbers at branch bases indicate the percentage of bootstrap replicates in which the taxa clustered together. Taxa isolated from canine and feline samples are shown in bold, italic typeface, while organisms isolated from human patients in the same geographical region are shown in bold typeface. The positive control organism for the PCR method is shown in italic.