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===Other species===
===Other species===
When other, ‘’’non-feline, carnivores’’’ (such as dogs) or sheep consume tissue cysts or oocysts from cat faeces, ''Toxoplasma gondii'' initiates '''extraintestinal replication'''. This process is the same for all hosts, and does not vary with the form of the parasite ingested. '''Bradyzoites''' and '''sporozoites''', from cysts and oocysts respectively, are released in the intestine and infect the intestinal epithelium where they replicate - asexual reproduction by '''endodyogeny''' (budding) producing 8-16 '''tachyzoites'''. Tachyzoites are lunate in shape, about 6 microns in diameter and possess the ability to multiply in almost any cell type. The infected cell ruptures to release tachyzoites which then disseminate via blood and lymph to infect other tissues. Tachyzoites then replicate intracellularly and, if the cell does not burst, they eventually encyst and persist for the life of the host. Tissue cysts readily form in the CNS, muscles and visceral organs.
When other, ‘’’non-feline, carnivores’’’ (such as dogs) or sheep consume tissue cysts or oocysts from cat faeces, ''Toxoplasma gondii'' initiates '''extraintestinal replication'''. This process is the same for all hosts, and does not vary with the form of the parasite ingested. '''Bradyzoites''' and '''sporozoites''', from cysts and oocysts respectively, are released in the intestine and infect the intestinal epithelium where they replicate - asexual reproduction by '''endodyogeny''' (budding) producing 8-16 '''tachyzoites'''. Tachyzoites are lunate in shape, about 6 microns in diameter and possess the ability to multiply in almost any cell type. The infected cell ruptures to release tachyzoites which then disseminate via blood and lymph to infect other tissues. Tachyzoites then replicate intracellularly and, if the cell does not burst, they eventually encyst and persist for the life of the host. Tissue cysts readily form in the CNS, muscles and visceral organs.
[[Image:Toxoplasmosis Life Cycle.jpg|thumb|right|300px| Life cycle of ''Toxoplasma gondii''. Source: Wikimedia Commons; Author: LadyofHats (2010)]]
==Transmission==
==Transmission==
[[Tissue_Cyst_Forming_Coccidian_Flashcards|Tissue Cyst Forming Coccidian Flashcards]]
[[Tissue_Cyst_Forming_Coccidian_Flashcards|Tissue Cyst Forming Coccidian Flashcards]]
==References==
#Merck & Co (2008) '''The Merck Veterinary Manual (Eighth Edition)''' ''Merial''
#'''OIE Manual of Diagnostic Tests and Vaccines for Terrestrial Animals 2008''', Chapter 2.9.10, 1284-1293.
#The Center for Food Security and Public Health, Iowa State University, College of Veterinary Medicine (2005). ''Toxoplasmosis Factsheet'', available at [http://www.cfsph.iastate.edu www.cfsph.iastate.edu]
#Lappin, M R (2006) Toxoplasmosis. In '''North American Veterinary Conference Proceeeding 2006''', ''NAVC''.
[[Category:Liver Protozoa]]
[[Category:Respiratory Parasitic Infections]]
[[Category:Tissue_Cyst_Forming_Coccidia]]
[[Category:Tissue_Cyst_Forming_Coccidia]]
[[Category:Expert Review]]
[[Category:Expert Review]]