IDENTIFICATION of Giardia lamblia

Giardia lamblia - trophozoite
10-20 µm long by 5-15 µm wide
1. Note sucking disk.
2. Iron-hematoxylin stain

Giardiasis is diagnosed by finding cysts or trophozoites in the feces, and both life cycle stages have a characteristic appearance.

The trophozoites average 10-20 μm in length, 5-15 μm in width, have a distinct “teardrop” or “pear” shape and two nuclei at the anterior end .........

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