liver fluke

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liver fluke:

see flukefluke,
parasitic flatworm of the trematoda class, related to the tapeworm. Instead of the cilia, external sense organs, and epidermis of the free-living flatworms, adult flukes have sucking disks with which they cling to their hosts and an external cuticle that resists digestion
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Liver Fluke


(Fasciola hepatica), a parasitic worm of the class Trematoda. The leaf-shaped body has a length of 2–5 cm. At the anterior end are the oral and ventral suckers. The liver fluke infests the liver, bile ducts, and gallbladder usually of herbivorous mammals, and more rarely of humans. The ova develop in water; the larvae that hatch from these ova and the partheno-genetic generations develop in an intermediate host, which is usually a mollusk, for example, the small freshwater snails of the family Lymnaeidae. The larva—a cercaria—emerges from the mollusk, swims, and settles on aquatic and coastal plants, becoming encysted as it converts to an adolescaria. The larvae that are swallowed by the definitive host penetrate the liver, where they grow and mature, eventually causing the disease fascioliasis.

Liver flukes are controlled by draining swamps, where lym-naeids hatch, by exterminating lymnaeids, by rotating pastures, and by treating cattle with anthelmintic drugs.


Shul’ts, R. S., and G. I. Dikov. Gel’minty i gel’mintozy sel’skokhoziaist-vennykh zhivotnykh. Alma-Ata, 1964.


liver fluke

[′liv·ər ‚flük]
(invertebrate zoology)
Any trematode, especially Clonorchis sinensis, that lodges in the biliary passages within the liver.
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Black disease is a major cause of losses in cattle (and sheep) that have had their livers damaged by liver fluke.
The highest positive sample percentage was observed for Liver fluke (46.
The stimulus for capsule formation is unknown, but may be functionally similar to the proline stimulus in the related liver fluke, Fasciola hepatica (Wolf-Spengler and Isseroff 1983).
The results of this study demonstrate that the human liver fluke O.
It has been observed that liver fluke infections in herbivores are widespread worldwide, including Iran.
cDNA cloning and gene characterization of the mitochondrial large subunit (LSD) rRNA from the liver fluke Fasciola hepatica.
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This report highlights a rare case of concurrent hepatitis B and liver fluke infection with hepatocellular carcinoma, presenting clinically as a diagnostic and surgical challenge.
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Such inflammatory signs are imputed to an incipient cholangitis, which is characteristic of the subclinical period of liver fluke disease.
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