LM of Trichina larvae encysted in muscle tissue

LM of Trichina larvae encysted in muscle tissue

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Credit: POWER AND SYRED/SCIENCE PHOTO LIBRARY

Caption: Light micrograph of Trichina spiralis (formerly called Trichinella spiralis) larvae encysted in human muscle tissue. Each cyst (blue) contains a single tightly-coiled larva which is seen section- ed at several points (purple sausage shapes). T. spiralis is a species of roundworm parasitic on carnivores & the cause of trichinosis in humans. It may be found in pigs, foxes, dogs, cats, badgers & rats. Humans contract trichinosis through eating poorly-cooked pork infected with larval cysts. The worms mature in the intestine & release a new generation of larvae which burrow through the intestinal wall & migrate towards the muscles. Magnification: x200 at 35mm size.

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Keywords: animal, invertebrate, invertebrates, light micrograph, nature, nematoda, nematode, nematode larvae, parasite, parasitic, roundworm, trichina spiralis, trichinella spiralis, trichinosis, wildlife, zoology

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