Colour SEM of Trichinella spiralis roundworms

Colour SEM of Trichinella spiralis roundworms

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This image is part of the feature Parasites

Credit: EYE OF SCIENCE/SCIENCE PHOTO LIBRARY

Caption: Trichinella roundworms. Coloured scanning electron micrograph (SEM) of Trichinella spiralis round- worms (nematode worms). These parasites infect mammals, including humans, pigs, dogs and rats. Infection follows the consumption of raw or undercooked meat which contains the cysts of the T. spiralis larvae. These mature into the adult form in the intestine. The adults live for about 6-8 weeks, during which time the females release large numbers of larvae which penetrate the wall of the intestine. From here they migrate around the body, causing fever and pains and forming cysts in the muscles. Magnification: x85 at 6x6cm size.

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Keywords: animal, invertebrate, invertebrates, muscle parasite, nature, nematoda, nematode, nematode worm, parasite, roundworm, trichinella sp., trichinella spi, trichinella spiralis, wildlife, zoology

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