oocyst

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stoma with guard cells

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oocyst

biology

Learn about this topic in these articles:

reproduction in protists

In protist: Reproduction and life cycles
…highly resistant stage—for example, the oocyst of the coccidian parasites, which may survive for a long time in the fecal material of the host or in the soil. This cyst is the infective stage for the next host in the parasite’s life cycle.
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role in malaria

In malaria: The course of the disease
…9 to 14 days into oocysts, which in turn break open and release thousands of sporozoites that migrate to the insect’s salivary glands, ready to infect the next person in the cycle.
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