References in periodicals archive ?
Proglottids (or segments) have been described as resembling cucumber seeds, pumpkin seeds, or watermelon seeds when moist, and rice grains when dried (Figure 1).
In formalin-fixed samples of proglottids from case-patients 12 and 16, DNA degradation caused by the fixative meant that only shorter cox1 fragments (249 bp, corresponding to sites 880-1128 of cox1) could be amplified successfully by PCR by using KOD FX DNA polymerase (Toyobo, Osaka, Japan).
Microscopic examination showed characteristic eggs in 7 patients' stools and both eggs and proglottids in 3 patients.
All taeniasis patients were informed of the study objectives and worm collection procedure through discussions, including about expulsion of proglottids.
This route of infection, however, is highly questionable because the mature proglottids are located in the third portion of the small intestine.
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.
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.
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.