This experiment is from the official website of Parasitology, School of Medicine, Shandong University.

Operation method

Morphological observation experiments of the beautiful tube nematode

Principle

Nematodes beautiful tube is a parasite of the oral cavity and esophagus of animals, and occasionally of humans. It mainly parasitizes the mucous membrane or submucous layer of the mouth, tongue, buccal pharynx, etc., and constantly moves its location.

Move

Adult milky white, elongated, males up to 62 millimeters long, 0.15-0.3 millimeters wide, females 145 millimeters long and 0.2-0.5 millimeters wide, but parasitic in humans or pigs is smaller, the body surface has a clear transverse stripe. The anterior epidermis of the insect body has many different sizes and shapes of keratinous protuberances arranged in eight rows, with a pair of cervical papillae on each side, a pair of wavy lateral wings after the cervical papillae, and a small mouth surrounded by six tiny cephalic sucking protuberances. The male has a distinct caudal wing, asymmetrical from side to side, 13 pairs of genital papillae, and a pair of intersecting spines, which are of different sizes and shapes. Female with blunt conical caudal end, asymmetrical, pubis slightly elevated, located slightly anterior to anus.

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