Whipworm parasites, light micrograph

Numéro d’image : 13369212
Whipworm parasites, light micrograph
Dark-field light micrograph of whipworms (Trichuris trichiura). These nematode parasites infect humans and cause trichuriasis, a type of helminthiasis, an often neglected tropical disease. They are commonly known as whipworms due to their shape: the front is narrow and pointed and resembles a hair or whip, and the rear is around five or six times wider. Adult worms live in the large intestine with their head buried in the intestine wall. A female can produce more than 10, 000 eggs per day, which are excreted in the faeces. When an egg is ingested by a suitable host it hatches in the small intestine. Whipworms can live for several years usually without causing significant harm to their host, although diarrhoea, dysentery and anaemia may be experienced.
Licence : Droits gérés
Crédit: Science Photo Library / Stammers, Sinclair
Taille de l’image : 3504 px × 2364 px
Model Release : Non requis
Property Release : Non requis
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