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Single-celled fungi multiply, alien-like, by fusing cells in host

Microsporidia cause diarrhea, an illness called microsporidiosis and even death in immune-compromised individuals. In spite of those widespread medical problems, scientists were uncertain about how these single-celled fungi reproduced in human or animal cells. But in a study that employed transparent roundworms, biologists at the University of California San Diego succeeded in directly observing how these microorganisms replicate and spread.
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Single-celled fungi multiply, alien-like, by fusing cells in host

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Biologists report that microsporidia fuse the cells of their animal hosts together so they can multiply and quickly spread, alien-like, within their hosts' uninfected cells.

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