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Proglottids (or segments) have been described as resembling cucumber seeds, pumpkin seeds, or watermelon seeds when moist, and rice grains when dried (Figure 1).
This route of infection, however, is highly questionable because the mature proglottids are located in the third portion of the small intestine.
The eggs contained in the gravid proglottid (about 50,000 each) are released after the proglottid becomes free and are passed with the feces.
It is possible that the eggs released from the proglottids of the adult worm entered the lumen of the appendix when the patient had acute appendicitis, and ulceration of the mucosa allowed egress of the eggs into the wall, where they incited a foreign body-type giant cell reaction.
eggs or proglottids were detected by microscopy), ranging from 1 (0.
Proglottids of tapeworms, presumably Asian tapeworm, were found in 8 of 72 (11%) samples representing all available sizes of bonytail, but scolexes could not be located in these fish so identification could only be presumptive.
When proglottids break off, they and the individual eggs shed in the feces.
Mature proglottids of the former appeared to contain a single vitellaria, clearly distinguishing it from the latter species, which is characterized by two vitellaria (Loewen, 1940; Brooks and Mayes, 1976).
pacificum because of the morphology of proglottids and eggs (6,7).
However, fecal pellets containing possible nematodes and proglottids were observed while in quarantine.
In a sample from case-patient 12, only proglottids stained with acetic acid-carmine were available for testing by both methods (Figure 1, panel A).
An adult-stage tapeworm can live for several years within the human intestine and intermittently releasing proglottids containing tens of thousands of potentially infective eggs.
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