E. histolytica vs E. coli Archives - LaboratoryTests.org https://laboratorytests.org/tag/e-histolytica-vs-e-coli/ Everything About Laboratory Tests... Sat, 29 Jun 2019 09:10:53 +0000 en-US hourly 1 https://wordpress.org/?v=6.8.2 https://laboratorytests.org/wp-content/uploads/2018/11/cropped-Laboratory-Tests-32x32.png E. histolytica vs E. coli Archives - LaboratoryTests.org https://laboratorytests.org/tag/e-histolytica-vs-e-coli/ 32 32 Differences Between Entamoeba histolytica and Entamoeba coli https://laboratorytests.org/differences-between-entamoeba-histolytica-and-entamoeba-coli/ https://laboratorytests.org/differences-between-entamoeba-histolytica-and-entamoeba-coli/#comments Tue, 06 Nov 2018 17:10:51 +0000 http://laboratorytests.org/?p=321 Genus Entamoeba includes a group of amoebic parasites. Among them Entamoeba histolytica is an important human pathogen causing amoebic dysentery as well as hepatic amoebiasis. Entamoeba coli is a commensal of large intestine, but doesn’t [...]

The post Differences Between Entamoeba histolytica and Entamoeba coli appeared first on LaboratoryTests.org.

]]> Genus Entamoeba includes a group of amoebic parasites. Among them Entamoeba histolytica is an important human pathogen causing amoebic dysentery as well as hepatic amoebiasis. Entamoeba coli is a commensal of large intestine, but doesn’t invade tissues.
Definitive diagnosis of amoebiasis depends on the demonstration of E. histolytica trophozoite or cyst in stool. Cases might get misdiagnosed because of similarities in their structure. Following are the structural differences between E. histolytica and E. coli.


S.N Characteristics Entamoeba histolytica Entamoeba coli

Trophozoite
1. Structure Entamoeba-histolytica-trophozoite Entamoeba-coli-trophozoite
2. Size 12-30 µm 20-40 µm
3. Motility Progressive.

Hyaline, fingerlike pseudopodia

 Sluggish, nondirectional

Granular pseudopodia
4. Nucleus 1, difficult to visualize in unstained smear 1, often visible in unstained smear
5. Karyosome Sharp central Eccenteric
6. Pheripheral Chromatin Fine and dispersed Coarse and Clumped
7. Cytoplasmic Inclusions RBCs, leukocytes and tissue debris but no bacteria Bacteria and other material but never RBCs

Cysts
1. Structure Entamoeba-histolytica-cyst Entamoeba-coli-cyst
2. Size 10-15 µm 15-25 µm
3. Shape Usually spherical Usually spherical, may be oval, triangular or other shaped
4. Nucleus Mature Cyst=4 nuclei Mature Cyst=8 Nuclei
5. Peripheral Chromatin Fine and dispersed Coarsely granular or clumped
6. Chromatoid Bodies Rounded ends Filamentous, thread like, pointed ends
7. Glycogen Mass Visible in uninucleate stage Large and visible in binucleate stage

The post Differences Between Entamoeba histolytica and Entamoeba coli appeared first on LaboratoryTests.org.

]]> https://laboratorytests.org/differences-between-entamoeba-histolytica-and-entamoeba-coli/feed/ 6