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Protozoa. Protozoa are single celled organisms. They come in many different shapes and sizes ranging from an Amoeba which can change its shape to Paramecium ...


Apr 9, 2014 ... Microscope reveals how amoeba that kills 70000 people a year works, giving clues to how other infections could operate.


Biology4Kids.com! This tutorial introduces protozoa. Other sections include plants, animal systems, cells, vertebrates, and invertebrates.