|Amoebic ulcer of the intestine caused by E. histolytica|
Examples include Entamoeba histolytica, Plasmodium (some of which cause malaria), and Giardia lamblia. Trypanosoma brucei, transmitted by the tsetse fly and the cause of African sleeping sickness, is another example.
The species traditionally collectively termed "protozoa" are not closely related to each other, and have only superficial similarities (eukaryotic, unicellular, motile, though with exceptions). The terms "protozoa" (and protist) are usually discouraged in the modern biosciences. However, this terminology is still encountered in medicine. This is partially because of the conservative character of medical classification, and partially due to the necessity of making identifications of organisms based upon appearances and not upon DNA.
Several pathogenic protozoans appear to be capable of sexual processes involving meiosis (or at least a modified form of meiosis). Included among these protozoans are Plasmodium falciparum (malaria), Toxoplasma gondii (toxoplasmosis), Leishmania species (leishmaniases), Trypanosoma brucei (African sleeping sickness), Trypanosoma cruzi (Chagas disease) and Giardia intestinalis (giardiasis).
- Protozoan+Infections at the US National Library of Medicine Medical Subject Headings (MeSH)
- "Intestinal and Luminal Protozoa".
- "Sleeping Sickness".
- Bernstein H, Bernstein C, Michod RE (2018). Sex in microbial pathogens. Infection, Genetics and Evolution volume 57, pages 8-25. https://doi.org/10.1016/j.meegid.2017.10.024
- Keen, E. C. (2013). "Beyond phage therapy: Virotherapy of protozoal diseases". Future Microbiology. 8 (7): 821–823. doi:10.2217/FMB.13.48. PMID 23841627.
- Hyman, P.; Atterbury, R.; Barrow, P. (2013). "Fleas and smaller fleas: Virotherapy for parasite infections". Trends in Microbiology. 21 (5): 215–220. doi:10.1016/j.tim.2013.02.006. PMID 23540830.
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