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File:Schistosoma haematobium egg 4843 lores.jpg

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Schistosoma_haematobium_egg_4843_lores.jpg (700 × 460 pixels, file size: 38 KB, MIME type: image/jpeg)

Description

ID#:4843 This micrograph depicts an egg from a Schistosoma haematobium trematode parasite; magnified 500x. Note the egg's posteriorly-protruding, terminal spine, unlike the spinal remnant, which protrudes from the lateral wall of the Schistosoma japonicum egg.

These eggs are eliminated in an infected human's feces or urine, and under optimal conditions in a watery environment, the eggs hatch and release "miracidia", which then penetrate a specific snail intermediate host. Once inside the host, the S. haematobium parasite passes through two developmental generations of sporocysts, and are released by the snail into its environment as "cercariae".
Date
Source http://phil.cdc.gov/PHIL_Images/20031013/b47fc1793d7443d7a5cdbfbc73d95e53/4843_lores.jpg
Author CDC, Public Health Image Library (PHIL)
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Public domain
This image is a work of the Centers for Disease Control and Prevention, part of the United States Department of Health and Human Services, taken or made as part of an employee's official duties. As a work of the U.S. federal government, the image is in the public domain.

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Schistosoma japonicum

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Date/TimeThumbnailDimensionsUserComment
current17:13, 7 May 2006Thumbnail for version as of 17:13, 7 May 2006700 × 460 (38 KB)Patho {{Information| |Description=ID#: 4843 Description: This micrograph depicts an egg from the trematode parasite Schistosoma japonicum with its vestigial spine. The Schistosoma japonicum egg is typically oval or subspherical, has a vestigial spine, and is

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