Endolimax

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Endolimax
Scientific classification
Domain:
Eukaryota
Phylum:
Amoebozoa
Subphylum:
Conosa
Class:
Archamoebea
Order:
Pelobiontida
Family:
Mastigamoebidae
Genus:
Endolimax

Kuenen & Swellengrebel, 1913

Endolimax is a genus of

false positives for other tests, notably the similar species Entamoeba histolytica, the pathogen responsible for amoebic dysentery, and because its presence indicates the host has consumed fecal material. It forms cysts with four nuclei which excyst in the body and become trophozoites. Endolimax nana nuclei have a large endosome
somewhat off-center and small amounts of visible chromatin or none at all.

Cyst

Cysts are small, with a spherical to ellipsoidal shape. Mature cysts contain four nuclei; immature cysts are rarely seen. These cysts measure 5–10 um, with a usual range of 6–8 um. In stained preparations, the nucleus has a distinct karyosome that, while not as large as that seen in the trophozoite, is still larger than the karyosome of the Entamoeba species. Peripheral chromatin is absent. Although the nuclei are not visible in unstained preparations, the karyosomes are readily apparent in iodine-stained wet mounts. The cytoplasm may contain diffuse glycogen, and chromatid bodies are absent. Occasionally, small granules or inclusions may occur in the cytoplasm.

Trophozoite

This stage is small, measuring 6–12

nuclear membrane. The cytoplasm, which is coarsely granular and often highly vacuolated, may contain bacteria.[4]

See also

  • Amoebic dysentery

References

  1. PMID 10605115
    .
  2. S2CID 23720692
    .
  3. S2CID 33460127
    .
  4. ISBN 0-89189-292-3


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