Giardia
A genus of flagellate intestinal EUKARYOTES parasitic in various vertebrates, including humans. Characteristics include the presence of four pairs of flagella arising from a complicated system of axonemes and cysts that are ellipsoidal to ovoidal in shape.
Source: National Library of Medicine 2013 MeSH Scope Note and Classification
Images
Figure 1. Giardia trophozoites and cysts, trichrome stain, under oil (100x magnification).
Figure 1. Giardia trophozoites and cysts, trichrome stain, under oil (100x magnification).
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Figure 2. Giardia cyst, trichrome stain with PVA fixative, under oil (100x magnification).
Figure 2. Giardia cyst, trichrome stain with PVA fixative, under oil (100x magnification).
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Notes
Figures 1 and 2 were contributed by John A. Branda, MD, Department of Pathology and the Microbiology Laboratories at the Massachusetts General Hospital, Boston, MA and Harvard Medical School, Boston, MA.
Related Cases
Trichrome staining of a lab specimen.
Related Images From Cases
References
  1. National Library of Medicine 2013 MeSH Scope Note and Classification