trophozoite of Entamoeba histolytica in a section through the large intestine.
The vacuole was created by digestive enzymes released by
the organism. Heavy infections cause vacuoles to coalesce, resulting in
sloughing off of the lining and subsequent, bloody, mucus-filled stools. 1000x
trophozoite of E. histolytica in evacuolated large intestine section, revealing enclosed RBC
"ghosts". 1000x