Introduction to Diagnostic Medical Parasitology
Entamoeba coli
Virtual Microscope
2 nuclei cyst
![](/.imaging/mte/default-theme/parasiteImage/dam/parasites/protozoa/intestinal-amoebe/entamoeba-coli/Ec-2kcy-skizze.png/jcr:content/Ec%202kcy%20skizze.png)
2 nuclei cyst
Size: 15 - 30 μm
- Immature cyst with 2 nuclei
- Typically located on opposite sides
- Only one nuclei in focus
- Most commen stage seen in stool specimen
- 1 and 4 nuclei cysts rarely seen
8 nuclei cyst
![](/.imaging/mte/default-theme/parasiteImage/dam/Virtual-Microscope/Excercises/Korrekte-Bilder/k-ec-2.jpg/jcr:content/k%20ec%202.jpg)
![](/.imaging/mte/default-theme/parasiteImage/dam/parasites/protozoa/intestinal-amoebe/entamoeba-coli/Ec-8kcy-skizze.png/jcr:content/Ec%208kcy%20skizze.png)
8 nuclei cyst
Size: 15 - 30 μm
- Mature cyst
- Nuclei not always all visible and sometimes centrally gathered
Vegetative form
![](/.imaging/mte/default-theme/parasiteImage/dam/Virtual-Microscope/Excercises/Korrekte-Bilder/k-ec.jpg/jcr:content/k%20ec.jpg)
![](/.imaging/mte/default-theme/parasiteImage/dam/parasites/protozoa/intestinal-amoebe/entamoeba-coli/Ec-veg-skizze.png/jcr:content/Ec%20veg%20skizze.png)
Vegetative form
Size: 15 - 50 μm
- Larger and structures more prominent than in E. histolytica
- Difficult to differentiate from E. histolytica.