Giardia lamblia protozoan, SEM

Giardia lamblia protozoan, SEM


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Giardia lamblia protozoa. Coloured scanning electron micrograph (SEM) of a group of Giardia lamblia trophozoites. Giardia are single-celled parasites of the intestinal tract. They are most common in tropical regions and have flagella (hair-like structures), which are used for locomotion. These are the trophozoite (active, feeding) life stage of the protozoa. Giardia lamblia is the causative agent of giardiasis, an intestinal disease that causes abdominal pain, diarrhoea and nausea. It is spread through contaminated food and water. Treatment is with antibiotics or antiprotozoal drugs, such as metronidazole.

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