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Schistosome eggs, light micrograph

Schistosome eggs, light micrograph

M120/0106

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Credit

CNRI / SCIENCE PHOTO LIBRARY CNRI / SCIENCE PHOTO LIBRARY

Caption

Schistosome eggs. Light micrograph of tissue from a human appendix containing eggs (dark red, two at upper centre) from the fluke Schistosoma haematobium, the cause of urinary schistosomiasis. This is a form of bilharzia. Eggs expelled from infected humans enter lakes and rivers, hatch into larvae and infect aquatic snails, where they develop into cercariae. After leaving the snail the cercariae infect humans who enter the water. The mature adult form lives in veins around the bladder, where the females lay the many hundreds of eggs that accumulate in tissues and cause damage. Magnification unknown.

Release details

Model release not required. Property release not required.

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