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Microbiological and Chemical Exposure Assessment

Giardia

Giardia image

Photo Credit: H.D.A. Lindquist, U.S. EPA

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The same Giardia lamblia (intestinalis) cyst as imaged at different instrument settings by confocal microscopy. (A) is the cyst imaged by transmission (differential interference contrast), only. (B) is the cyst wall selectively imaged through use of fluorescent-labelled (TRITC) antibody that is cyst wall specific. (C) is the cyst imaged through use of carboxy fluorescein diacetate, a viability stain. (D) is a composite image of (B) and (C). (E) is a composite image of (A), (B), and (C). Bar = 10 microns.

Source: Gerbil stool.

Method: Confocal Microscopy

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