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. 2021 Aug 10;12:692837. doi: 10.3389/fmicb.2021.692837

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Copyright © 2021 Zhang, Mi, Yang, Gong, Xu, Feng, Chen, Huang, Han and Chen.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Relationships among Giardia taxa inferred from the phylogenetic analysis of partial triose-phosphate isomerase gene (tpi) sequence data by Bayesian inference (BI). Posterior probabilities are indicated at all major nodes. Bold font indicates Giardia species or genotypes characterized from fecal DNA samples in this study. In parentheses are the numbers of samples representing a particular species, genotype, and sequence (GenBank accession numbers indicated). Novel genotypes (*). Scale bar represents the number of substitutions per site. All groups were strongly supported (pp = 0.96–1.00). pp < 0.95 were not shown.