Giardia intestinalis – Cysts in stools (wet mouint, X 1000)

France, Preney Laure

Mature cysts have 4 nuclei (only one visible on this picture), axonemes and median bodies. Usually, the most prominent component is an elongate S-shaped stack of flagella which crosses the cyst in the median axis. Often some cysts appear to be shrunk or distorted.