Blastocystis is a genetically diverse intestinal protist colonizing both human and non-human hosts. By 2013, 17 subtypes had been acknowledged. Since then, nine more subtypes have been proposed. We argue that several recently proposed subtypes are invalid. We also revisit recommendations regarding the requirements for annotating sequences as new subtypes.

中文翻译：

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抢先的潘多拉魔盒：重囊藻亚型。

胚泡是一种遗传多样的肠道原生生物，定植于人类和非人类宿主中。到2013年，已确认17种亚型。从那时起，又提出了九种亚型。我们认为最近提出的几种亚型是无效的。我们还将重新讨论有关将序列注释为新的子类型的要求的建议。