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A Trichinella larva lies coiled inside an oval nurse cell cyst, shown in cutaway so the worm's tight spiral is fully visible. The larva's ringed cuticle is marked with fine lines along its body, and its head lifts up from the coil near the opening. Around it, the cyst wall carries the stretched, fibrous texture of the muscle fiber it has taken over. Use it to teach parasitology or food safety in a biology class, add it to a collection of parasite models, or display it as an unsettling science curiosity.

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