ATLASINTESTINAL PARASITES (Protozoa)
      LOBOSEA Order: Amoebida

      ENTAMOEBA HARTMANNI

      hart1-ic

      Entamoeba hartmanni: The identification of intestinal amoebae depends
      on the size and shape of trophozoites and cysts
      and on morphology and number of nuclei.
      Entamoeba hartmanni is a commensal of the large intestine with
      a world-wide distribution.


      hart2-ic

      Entamoeba hartmanni trophozoites (4-11 µm) are similar to
      E.histolytica trophozoites, present a small karyosome often eccentrical.


      By Dr. Marc Lontie

      hart3.ic

      		E_hartmanni1

      Entamoeba hartmanni cyst: immature cysts (7-10 µm)
      are spherical with 1 or 2 nuclei.

       E_hartmanni1:       Entamoeba hartmanni cyst: small cyst with one visible nucleus.
      The nucleus shows the peripheral chromatin and a central karyosome
      (Lugol stain).

      E_hartmanni1: Courtesy of Dr. Marc Lontie:
      Director of the laboratory of the
      Medisch Centrum voor Huisartsen,
      Maria Theresiastraat 63a; B-3000 Leuven, Belgium.


      hart4.ic

      Entamoeba hartmanni: mature cysts (7-10 µm) have 4 nuclei,
      are very similar to E.histolytica and can be differentiated mainly on size.


      By Daisy Zitova RNDr, Ph.D., Marek Bednar, MD, Ph.D

      hart5.ic

      Entamoeba hartmanni: cysts are 5-8 µm in diameter. 
      In the left cyst (containing one nucleus) 
      the sausage-shaped chromatidial body is present. Stained fecal film. 
      Wheatley modification of Gomori‘s trichrome technique. 
      Objective 100 X