SEM of Giardia
- David Gregory & Debbie Marshall
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About this work
Scanning electron micrograph of Giardia, computer-coloured purple on blue. This parasitic protozoan inhabits the human small intestine. It is usually harmless, but may cause diarrhoea (giardiasis). It has two nuclei, four pairs of undulipodia, and two sucking discs for attaching to the intestine wall.