Introduction to Diagnostic Medical Parasitology
Toxoplasma gondii
Trophozoites
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Trophozoites (stained with Giemsa)
Size: 4-8 x 2-3 µm
- Tapered anterior end
- Blunt posterior end
- Large nucleus
Oocyst
![](/.imaging/mte/default-theme/parasiteImage/dam/diseases/toxoplasmosis/essentials_1/jcr:content/essentials_1.jpg)
Oocysts
Seize: 10-12 µm
- Contain two sporocysts
- Only in the feces of domestic and wild felids, the definitive hosts
- Cysts are shed unsporulated in the feces
- Cysts take 48-72 hours to sporulate and become infective