Parasite eggs, SEM

Numéro d’image : 12289620
Parasite eggs, SEM
Eggs of a tapeworm, fluke and nematode. Coloured scanning electron micrograph (SEM) of common parasite eggs. Tapeworm eggs (largest) are released into the intestines, expelled with the faeces and then ingested by an intermediate host. They travel to the organs and form a hydatid cyst, which if ingested by the definitive host, forms a new tapeworm. The nematode egg (medium size) has a thick sculptured protective case. These thick-shelled eggs can survive unfavourable conditions of drought, buried in the soil.The female worm lays large numbers of eggs in the human intestine which are excreted in the faeces and ingested by a new host.The eggs of the Liver Fluke are secreted into the bile duct of the host animal, where they pass through the gut to be excreted into the outside environment. Magnification: x300 when printed 10 centimetres wide
Licence : Droits gérés
Crédit: Science Photo Library / Gschmeissner, Steve
Taille de l’image : 4112 px × 4572 px
Model Release : Non requis
Property Release : Non requis
Restrictions : -

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