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A histopathological study on the intestine of mice and rats experimentally infected by Fibricola Seoulensis
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A histopathological study on the intestine of mice and rats experimentally infected by Fibricola Seoulensis

Lee, Soon Hyung , Yoo, Byong Hoon , Hong, Sung Tae , Chai, Jong Yil , Seo, Byong Seol , Chi, Je Geun
Korean J Parasitol 1985;23(1):58-72.
1Department of Parasitology and Institute of Endemic Deseases, College of Medicine, Seoul National University, Seoul 110, Korea.
2Department of Pathology, College of Medicine, Seoul National University, Seoul 110, Korea.
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A histopathological study was carried out on the duodenum of mice and rats experimentally infected by F. seoulensis. Each mouse was infected wit 500 metacercariae and killed after 1, 2, 3 days, 1 and 2 weeks from infection. Each rat was given 1,000 metacercariae and was examined after 1, 2, and 4 weeks from infection. The duodenal tissue sections of mice and rats were stained with hematoxylin and eosin, and PAS stained for the rats of 1 week group. The pathological findings are summarized as below. There were no differences in mucosal findings between the mice and the rats, adn between the location of duodenum, 1 and 5 cm distal to the pylorus. Each worm embraced a villus exclusively with its foliate forebody which was inserted into the intervillous spaces. The fluke pinched villous epithelia using its oral and ventral suckers. The tribocytic organ destroyed the villous epithelia deeply up to the stroma after 3 days from infection. Apparent villous changes were observed in the mice after 3 days from infection. Villous changes were shortening, widening, blunting or fusion. The villous stroma showed edema, microscopic hemorrhage, capillary congestion, dilatation of lymphatics and inflammatory cell infiltration. The cells were lymphocytes, plasma cells, eosinophils and giant cells. Rarely submucosal and transmural inflammation was encountered.

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A histopathological study on the intestine of mice and rats experimentally infected by Fibricola Seoulensis
Korean J Parasitol. 1985;23(1):58-72.
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A histopathological study on the intestine of mice and rats experimentally infected by Fibricola Seoulensis
Korean J Parasitol. 1985;23(1):58-72.
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