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Figure 1. Giardia lamblia.
Electron micrographs show a duodenal-biopsy specimen from a 29-year-old student of veterinary medicine with a history of fatigue, abdominal pain, and chronic diarrhea that prompted tests for Whipple's disease and Crohn's disease. The appearance of the parasite is typical of Giardia lamblia.
Panel A shows a cross-sectional view of the trophozoite form of G. lamblia posterior to the ventral suction disk (x19,000). The trophozoite rests outside the glycocalyx of the microvillous border of a duodenal epithelial cell. Its paired central flagella are in contact with the underlying epithelial cells (the continuity of the flagella is not . . . [Full Text of this Article] |
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