Public Domain Picture: This scanning electron micrograph (SEM) revealed, a circular lesion on the mucosal microvillous surface of the intestine on the left, which

By: CDC/ Dr. Stan Erlandsen, Courtesy: Public Health Image Library

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This scanning electron micrograph (SEM) revealed, a circular lesion on the mucosal microvillous surface of the intestine on the left, which

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This scanning electron micrograph (SEM) revealed, a circular lesion on the mucosal microvillous surface of the intestine on the left, which

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This scanning electron micrograph (SEM) revealed, a circular lesion on the mucosal microvillous surface of the intestine on the left, which was a result of the tight adhesion produced by the ventral adhesive disk of a Giardia sp. protozoan. The Giardia trophozoite responsible for the lesion on the right, is seen lying on its dorsal surface in this figure, thereby, revealing the circular ventral adhesive disk. Each small circular profile under the protozoan represents the rounded tip of a single microvillous, and it is estimated that 2000 to 3000 microvilli cover the surface of a single intestinal epithelial cell.

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CDC/ Dr. Stan Erlandsen

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Public Health Image Library

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December 4, 2012

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