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. 2020 Dec 15;11:604964. doi: 10.3389/fmicb.2020.604964

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Copyright © 2020 Alibrandi, Schnell, Perotto and Cardinale.

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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Relative fraction of sequences belonging to Bacteria, Plastids and Mitochondria in four orchid samples, as obtained by metabarcoding of 16S rRNA genes without PNA blockers, compared with the same samples with PNA.