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. 2020 Apr 7;12(4):232. doi: 10.3390/toxins12040232

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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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ML tree based on partial 16S rRNA gene sequences of 40 Raphidiopsis/Cylindrospermospis strains. Outgroup = Sphaerospermopsis aphanizomenoides (LN846954). Cluster I includes Cylindrospermopsis and Raphidiopsis strains from Asia, Europe, Africa, Australia and North America, cluster II includes strains from North and South America (USA, Mexico, Brazil), North Africa (Tunisia), Southwest Europe (Spain) and New Zealand. Strains from this study are marked in bold. Bootstrap values above 50 are included. The scale bar indicates 0.5% sequence divergence.