• Trichinella Spiralis Encysted Larvae in Muscle

Trichinella spiralis, muscle w/ encysted larvae, 400X sec

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Product Description

Trichinella spiralis is an ovoviviparous nematode parasite, occurring in rodents, pigs, horses, bears, and humans, and is responsible for the disease trichinosis. It is sometimes referred to as the “pork worm” due to it being found commonly in undercooked pork products. Trichinella species are the smallest nematode parasite of humans, have an unusual lifecycle, and are one of the most widespread and clinically important parasites in the world. The small adult worms mature in the intestines of a definitive host such as a pig. Each adult female produces batches of live larvae, which bore through the intestinal wall, enter the blood (to feed on it) and lymphatic system, and are carried to striated muscle. Once in the muscle, they encyst, or become enclosed in a capsule. Humans can be infected by eating infected pork, horsemeat, or wild carnivores such as fox, cat, or bear.