While it's very rare, it can be deadly—a brain infection by a microbe widely known as the "brain-eating amoeba." The pathogen in question is called Naegleria fowleri. The "brain-eating" part ...

Occasionally amoeba may enter the greater circulation ... histolytica can be demonstrated in the stools. For demonstrating cysts and glycogen granules under the microscope, a strong Lugol ...