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DescriereGiardia muris trophozoite SEM giardia muris The ventral adhesive disk resembles a giardia muris cup, where overlapping microtubules in the cytoplasm form a numbershaped figure.
The adhesive disk facilitates adherence of the protozoan to the intestinal surface.
The protozoan Giardia causes the diarrheal disease called giardiasis. Giardia species exist as free-swimming by means of flagella trophozoites, and as egg-shaped cysts.
It is the cystic stage, which facilitates the survival of these organisms under harsh environmental conditions. The cyst is considered the infective form, and disease is often transmitted giardia muris drinking contaminated water.
As depicted in these SEMs, in the intestine, cysts are stimulated to liberate trophozoites. Cysts can be shed giardia muris fecal material, and can, thereafter, remain viable for several months in appropriate environmental conditions. Cysts can also be transferred giardia muris from person-to-person, as a result of poor hygiene.
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