Coloured SEM of Giardia sp., a human parasite

Coloured SEM of Giardia sp., a human parasite

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Credit: HOSSLER, CUSTOM MEDICAL STOCK PHOTO/ SCIENCE PHOTO LIBRARY

Caption: Giardia sp. protozoan. Coloured scanning electron micrograph (SEM) of the protozoan Giardia sp., a human parasite of the gastrointestinal tract. Giardia sp. are pear-shaped, with hair-like flagellae for motility. They cause the disease giardiasis (or lambliasis), an infection of the small intestine most common in tropical areas. Giardia sp. attaches by means of sucking discs to microvilli in the human intestine. Abdominal cramps, swelling, diarrhoea and nausea may occur. The organism is spread by direct contact or through contaminated food and water. Magnification: x3300 at 35mm size.

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Keywords: animal, flagellate, giardia sp., giardiasis, invertebrate, invertebrates, lambliasis, nature, protozoa, protozoan, wildlife, zoology

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