Some are parasitic and cause disease; in humans, the diplomonad Giardia infects the intestine and can cause diarrhea. Diplomonads have multiple flagella, two unfused haploid nuclei and reduced ...

Giardia: Giardiasis refers to a syndrome of diarrhea, excess gas, and abdominal cramping. It is caused by Giardia lamblia, a water-borne parasite ... The most common symptoms are sudden high fever, ...