Some protozoa infect the brain of their host, shaping its behavior in ways most suited to the pathogen, even if it leads to the suicide of the host THE ANCIENT DEBATE surrounding the existence of free ...

Biologists have developed a sensor that employs one-celled protozoa to detect toxins in water sources. The new technique works by introducing protozoa into small chambers with water samples taken from ...

Three types of parasites can cause disease in humans. They are protozoa, carried by mosquitos, helminths, such as roundworm, and ectoparasites, for instance lice and bed bugs. Parasites are organisms ...

Protozoa are small, single-celled organisms that live in moist environments, such as ponds, swamps, and soils. They can survive themselves or sometimes live as a parasite inside the plants or animals.

Researchers have analyzed drinking water and detected oocysts of Cryptosporidium and cysts of Giardia, two protozoa that cause outbreaks of diarrhea in humans. The levels detected are very low and do ...

A new test using protozoa — single-celled organisms — has been developed by U.K. researchers, who say it has "great potential" for reducing the use of animals to determine the safety of cosmetics.