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- Endolimax nana (Fig. 4-1) is the smallest of the intestine-dwelling amoebae infecting humans, its trophozoite averaging only 8 μm in diameter (range, 6-15 μm). The trophozoite lives in the host’s colon and is generally considered to be nonpathogenic. According to some surveys, prevalence may be as high as 30% in some populations.
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Nov 4, 2015 · Image (d) shows a Endolimax nana trophozoite Based on the single SSU rRNA gene sequence in GenBank, in-house primers have been developed [ Table 3 ] that have proved partially effective for diagnosing E. nana in genomic DNA extracted from fresh stool.
Entamoeba coli, E. hartmanni, E. polecki, Endolimax nana, and Iodamoeba buetschlii are generally considered nonpathogenic and reside in the lumen of the large intestine in the human host. Both cysts and trophozoites of these species are passed in stool and are considered diagnostic .
Endolimax nana (Fig. 4-1) is the smallest of the intestine-dwelling amoebae infecting humans, its trophozoite averaging only 8 μm in diameter (range, 6-15 μm). The trophozoite lives in the host’s colon and is generally considered to be nonpathogenic.
Entamoeba coli, E. hartmanni, E. polecki, Endolimax nana, and Iodamoeba buetschlii are generally considered nonpathogenic and reside in the large intestine of the human host . Both cysts and trophozoites of these species are passed in stool and considered diagnostic .
Endolimax nana is a small ameba that typically produces ovoid cysts measuring 5–14 μm in diameter (Figure 13(e)). They can be confused with cysts of E. histolytica and E. hartmanni because of cyst size and the presence of four nuclei.
Laboratory Diagnosis. Laboratory diagnosis is made by finding the characteristic cysts in an iodine stained, formol-ether concentration method or by detecting the characteristic trophozoites in a wet preparation or a permanent stained preparation. A cyst of E. nana displaying 4 pinpoint nuclei.
Jan 1, 2016 · Cysts of Endolimax nana in direct smear (a), concentrated with formalin and ethyl acetate and stained with iodine showing the characteristic gibbous appearance (b), and isolated on a sucrose...
