LM of giant liver fluke, Fasciola hepatica

LM of giant liver fluke, Fasciola hepatica

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Credit: J.C. REVY, ISM/SCIENCE PHOTO LIBRARY

Caption: Light micrograph of the liver fluke Fasciola hepatica, a parasite of sheep, cattle & humans. Humans ingest the encysted larvae through eating watercress or chestnuts. Immature flukes migrate through the duodenum & into the bile ducts via the liver, where they reach maturity. Self- fertilization results in eggs being passed in feces into water. The eggs hatch to release free-swimming larvae (miracidia), which penetrate the soft tissues of their next hosts, snails. The free-swimming form released from snails becomes encysted on aquatic vegetation & becomes the infective stage. Magnification: x1.3 at 35mm size.

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Keywords: animal, fasciola hepatica, flatworm, fluke, giant liver, human, invertebrate, invertebrates, light micrograph, liver, liver fluke, nature, parasite, platyhelminthes, wildlife, zoology

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