Light micrograph of liver fluke,Fasciola hepatica
Numéro d’image : 11906407
| Liver fluke. Light micrograph of an adult liver fluke,Fasciola hepatica,a parasite of sheep,cattle & humans. Humans ingest the fluke larvae by eating infested vegetation. Immature flukes penetrate the intestinal wall & pass into the bile ducts via the liver. They mature whilst ingesting blood & tissue debris. About 3 or 4 months after infection the flukes produce eggs which pass into the faeces,& so pass out of the body to contami- nate lakes and streams. The eggs hatch to release larvae which infect certain snails. A free- swimming form released from the snails becomes encysted on aquatic vegetation,forming the next infective stage. Magnification: x6 at 35mm size | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / Steger, Volker |
| Taille de l’image : | 5344 px × 3534 px |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : | - |
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