ENTAMOEBA COLI

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Entamoeba coli: The identification of intestinal amoebae

depends on the size and shape of trophozoites and cysts and
on number of nuclei and aspect of karyosome and chromatin.
E. coli is an harmless commensal of the colon with a world-wide distribution.

Entamoeba coli trophozoites measure 20-30 µm and have
a vescicolous nucleus with a large eccentric karyosome
and an irregulary distributed peripheral chromatin

E.coli cysts are spherical and measure 14-30 µm (usually 15-20).
Mature cysts have 8 nuclei with a large karyosome
(central or eccentric) and an irregular (sometimes regular) chromatin.
The nuclei can be numerated with careful focusing.

E.coli: with focusing three other nuclei are visible.

Entamoeba coli: the spherical cysts are 15-20 µm in diameter.
Mature cysts contain 8 nuclei.
On both images cysts with 4 to 6 visible nuclei are present.

Di Posting Oleh : Dorin Mutoif , jurusan kesehatan Lingkungan Poltekkes Depkes Yogyakarta

D/a : Munggu Petanahan Kebumen