Gastrointestinal tract: cryptosporidiosis and HIV

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Gastrointestinal tract: cryptosporidiosis and HIV. Wellcome Collection. CC0 1.0 Universal. Source: Wellcome Collection.

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Cryptosporidiosis: Cryptosporidium parvum, a diarrhoea causing parasite. This is a transmission electron micrograph of a section of duodenum. The image shows a Cryptosporidium parvum trophozoite (left) and a meront (right). Three merozoites are seen in the meront. At the base of both the trophozoite and the meront the electron-dense feeding disc is the interface between the parasite and the host cell cytoplasm. The patient was HIV-positive and presented with diarrhoea.

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