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. 2020 Nov 30;8(12):1910. doi: 10.3390/microorganisms8121910

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© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Construction of Taxon Hypotheses computed directly from the database of individuals and their properties. Different OTU levels are computed by changing the distance or similarity threshold and by using properties which are more conserved or more variable. Every TH has a unique persistent identifier (PID). The number of the OTUs (n) of the specific level is always equal to the number of THs of the same level. OTUz₅ is the Operational Taxonomic Unit of the hierarchical level 5; z shows that OTUs of the different levels are computed from the same database of individuals. However, the properties of the individuals may vary.