1887

Abstract

SUMMARY: The life cycle of consists of the following stages: germinating microcysts, young vegetative cells, intermediate cells, mature cells and resting microcysts. Germination takes place by simple elongation, or germ-tube formation. The nucleus of the germinating microcyst is a single oval or elongate body. The young vegetative cell should probably be referred to as multinucleate because the nucleus consists of a string of lobate bodies. In intermediate and mature cells the nucleus is either bi-lobed or oval, with the presence of entire edges. Details of the electron micrographs suggest a nuclear membrane. Microcysts normally have a single nucleus, and possibly possess nucleoli. Resting microcysts consist of a thin outer shell, a thick inner shell, cytoplasm and a nucleus.

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/content/journal/micro/10.1099/00221287-16-1-76
1957-02-01
2019-10-21
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