Usar "protozoan" en una oración

1. It was a spiral protozoan of humanoid evolution that could inflame the joints and even the nervous system

2. Giardiasis is a disease caused by the protozoan genus Giardia, which contains several species of intestinal parasites that are common contaminants of food and water everywhere

3. The protozoan is spread through contaminated feces and water that come into contact with infected parrots, including parent birds