Archamoebae

Magnified 500X, this iodine-stained, concentrated, direct mount photomicrograph revealed the presence of a cyst of the protozoan parasite, Entamoeba coli. This is one intestinal parasite, which lives as a commensal organism, existing harmlessly in the human digestive tract. Of importance, is the fact that this organism can often be confused with its pathogenic counterpart, E. histolytica.Created: 1972

Magnified 675X, this photomicrograph revealed the presence of a parasitic Entamoeba histolytica trophozoite, which contained vacuolated cytoplasm, within which were two red blood cells (RBCs), and a pyknotic body. Entamoeba histolytica/Entamoeba dispar trophozoites have a single nucleus, which have a centrally placed karyosome and uniformly distributed peripheral chromatin. This typical appearance of the nucleus is not always observed as some trophozoites can have nuclei with an eccentric karyosome and unevenly distributed peripheral chromatin. The cytoplasm has a granular or "ground-glass" appearance. E. histolytica/E. dispar trophozoites usually measure 15µm - 20µm (range 10µm - 60µm), tending to be more elongated in diarrheal stool.Created: 1971

Magnified 100X, this concentrated, unstained photomicrograph revealed the presence of two different protozoan parasites, Entamoeba coli and Endolimax nana. Both of these intestinal parasites live as commensal organisms, existing harmlessly in the human digestive tract. Of importance, is the fact that these organisms can often be confused with their pathogenic counterpart, E. histolytica.Created: 1972

Using a trichrome stain, this photomicrograph depicted a cyst of the single-celled parasite, Entamoeba histolytica. Stained a blue color, the cyst, see here in the center of the micrograph, is one of the life cycle phases through which a protozoan organism passes as it matures. In this phase, due to the protective cyst wall, the organism is extremely resilient to the elements and is able to survive from days to weeks in the external environment. The cyst represents the highly infective phase of the life cycle. Note the presence of an elongated, blunt ended chromatoid body within the cyst A, and a well-defined nucleus B.Created:

Magnified 500X, this direct mount, unstained photomicrograph revealed the presence of a cyst of the protozoan parasite, Entamoeba coli. This is one intestinal parasite, which lives as a commensal organism, existing harmlessly in the human digestive tract. Of importance, is the fact that this organism can often be confused with its pathogenic counterpart, E. histolytica.Created: 1972

Using a trichrome stain, this photomicrograph depicted a trophozoite of the single-celled parasite, Entamoeba histolytica. Stained purple, the trophozoite, see here in the center of the micrograph, is one of the life cycle phases through which a protozoan organism passes as it matures, and is the active-feeding phase of its growth. The other particulates surrounding the trophozoite represent debris from the slide specimen.Created:

Magnified 100X, this direct mount, unstained photomicrograph revealed the presence of three cysts of the protozoan parasite, Entamoeba coli, as well as what appears to be a trophozoite. This is one intestinal parasite, which lives as a commensal organism, existing harmlessly in the human digestive tract. Of importance, is the fact that this organism can often be confused with its pathogenic counterpart, E. histolytica.Created: 1972

This photomicrograph revealed Entamoeba histolytica cysts that when mature, will display four identifiable nuclei.Created: 1980

Magnified 100X, this direct mount, unstained photomicrograph revealed the presence of a cyst of the protozoan parasite, Entamoeba coli. This is one intestinal parasite, which lives as a commensal organism, existing harmlessly in the human digestive tract. Of importance, is the fact that this organism can often be confused with its pathogenic counterpart, E. histolytica.Created: 1972

This split-screen image revealed two parasitic Entamoeba histolytica protozoan trophozoites.Created: 1980

Magnified 1125X, this photomicrograph revealed the presence of a parasitic Entamoeba coli trophozoite. The trophozoites of E. coli measure usually 20µm - 25µm, but they can be elongated and reach up to 50µm. Each trophozoite has one nucleus with a characteristically large, eccentrically-situated karyosome, and coarse, irregular peripherally-situated chromatin. The cytoplasm is coarse and vacuolated, and is known as "dirty" cytoplasm.Created: 1971

This patient presented with a case of invasive extraintestinal amebiasis affecting the cutaneous region of the right flank causing severe tissue necrosis. Here we see the site of tissue distruction, pre-debridement. Please note PHIL 5236, which depicts the same patient with the post-debridement appearance of the cutaneous amebiasis lesion. The wound then be covered by autologous skin grafts.Created: 1986

Description: English: Entamoeba histolytica (Entamoeba histolytica). Optical microscopy technique: Bright field. Magnification: 3000x (for picture width 26 cm ~ A4 format). Čeština: Měňavka (Entamoeba histolytica). Mikroskopická technika: Světlé pole. Zvětšení: 3000x (při šířce obrázku 26 cm ~ A4 formát). : This image comes from the archive of Josef Reischig and is part of the 384 pictures kindly donated by the authorship heirs under CC BY SA 3.0 license as a part of Wikimedia Czech Republic's GLAM initiative. čeština | English | +/−. Date:. Source: Author's archive. Author: Doc. RNDr. Josef Reischig, CSc..

Summary.mw-parser-output table.commons-file-information-table,.mw-parser-output.fileinfotpl-type-information{border:1px solid #a2a9b1;background-color:#f8f9fa;padding:5px;font-size:95%;border-spacing:2px;box-sizing:border-box;margin:0;width:100%}.mw-parser-output table.commons-file-information-table>tbody>tr,.mw-parser-output.fileinfotpl-type-information>tbody>tr{vertical-align:top}.mw-parser-output table.commons-file-information-table>tbody>tr>td,.mw-parser-output table.commons-file-information-table>tbody>tr>th,.mw-parser-output.fileinfotpl-type-information>tbody>tr>td,.mw-parser-output.fileinfotpl-type-information>tbody>tr>th{padding:4px}.mw-parser-output.fileinfo-paramfield{background:#ccf;text-align:right;padding-right:0.4em;width:15%;font-weight:bold}.mw-parser-output.commons-file-information-table+table.commons-file-information-table,.mw-parser-output.commons-file-information-table+div.commons-file-information-table>table{border-top:0;padding-top:0;margin-top:-8px}@media only screen and (max-width:719px){.mw-parser-output table.commons-file-information-table,.mw-parser-output.commons-file-information-table.fileinfotpl-type-information{border-spacing:0;padding:0;word-break:break-word;width:100%!important}.mw-parser-output.commons-file-information-table>tbody,.mw-parser-output.fileinfotpl-type-information>tbody{display:block}.mw-parser-output.commons-file-information-table>tbody>tr>td,.mw-parser-output.commons-file-information-table>tbody>tr>th,.mw-parser-output.fileinfotpl-type-information>tbody>tr>td,.mw-parser-output.fileinfotpl-type-information>tbody>tr>th{padding:0.2em 0.4em;text-align:left;text-align:start}.mw-parser-output.commons-file-information-table>tbody>tr,.mw-parser-output.fileinfotpl-type-information>tbody>tr{display:flex;flex-direction:column}.mw-parser-output.commons-file-information-table+table.commons-file-information-table,.mw-parser-output.commons-file-information-table+div.commons-file-information-table>table{margin-top:-1px}.mw-parser-output.fileinfo-paramfield{box-sizing:border-box;flex:1 0 100%;width:100%}} Description: Set of parasite microscopic images. Date: 29 September 2011, 12:20. Source: Entamoeba histolytica x100mag UK NEQAS. Author: Vivien Rolfe.

Description: English: Entamoeba histolytica multiply by binary fission. Date: 12 September 2014, 16:40:34. Source: Own work. Author: Juan Carlos Fonseca Mata.

Description: Entamoeba hystolytica: illustration from the Textbook on Disease-Producing Microorganisms. Date: 29 December 2011, 13:45. Source: Entamoeba hystolytica. Author: Arallyn! from United States. Original Date: 1910. Other versions: .

Summary.mw-parser-output table.commons-file-information-table,.mw-parser-output.fileinfotpl-type-information{border:1px solid #a2a9b1;background-color:#f8f9fa;padding:5px;font-size:95%;border-spacing:2px;box-sizing:border-box;margin:0;width:100%}.mw-parser-output table.commons-file-information-table>tbody>tr,.mw-parser-output.fileinfotpl-type-information>tbody>tr{vertical-align:top}.mw-parser-output table.commons-file-information-table>tbody>tr>td,.mw-parser-output table.commons-file-information-table>tbody>tr>th,.mw-parser-output.fileinfotpl-type-information>tbody>tr>td,.mw-parser-output.fileinfotpl-type-information>tbody>tr>th{padding:4px}.mw-parser-output.fileinfo-paramfield{background:#ccf;text-align:right;padding-right:0.4em;width:15%;font-weight:bold}.mw-parser-output.commons-file-information-table+table.commons-file-information-table,.mw-parser-output.commons-file-information-table+div.commons-file-information-table>table{border-top:0;padding-top:0;margin-top:-8px}@media only screen and (max-width:719px){.mw-parser-output table.commons-file-information-table,.mw-parser-output.commons-file-information-table.fileinfotpl-type-information{border-spacing:0;padding:0;word-break:break-word;width:100%!important}.mw-parser-output.commons-file-information-table>tbody,.mw-parser-output.fileinfotpl-type-information>tbody{display:block}.mw-parser-output.commons-file-information-table>tbody>tr>td,.mw-parser-output.commons-file-information-table>tbody>tr>th,.mw-parser-output.fileinfotpl-type-information>tbody>tr>td,.mw-parser-output.fileinfotpl-type-information>tbody>tr>th{padding:0.2em 0.4em;text-align:left;text-align:start}.mw-parser-output.commons-file-information-table>tbody>tr,.mw-parser-output.fileinfotpl-type-information>tbody>tr{display:flex;flex-direction:column}.mw-parser-output.commons-file-information-table+table.commons-file-information-table,.mw-parser-output.commons-file-information-table+div.commons-file-information-table>table{margin-top:-1px}.mw-parser-output.fileinfo-paramfield{box-sizing:border-box;flex:1 0 100%;width:100%}} Description: This image is in the public domain and thus free of any copyright restrictions. Courtesy of CDC.gov prep4md. Date: 13 November 2008, 17:56. Source: Entamoeba Histolytica cyst. Author: Yasser from Cairo.

Description: Infections of amoeba in humans. Date: 20 September 2012, 23:46. Source: Entamoeba histolytica. Author: Iqbal Osman from Durban, North Coast, South Africa.

Summary.mw-parser-output table.commons-file-information-table,.mw-parser-output.fileinfotpl-type-information{border:1px solid #a2a9b1;background-color:#f8f9fa;padding:5px;font-size:95%;border-spacing:2px;box-sizing:border-box;margin:0;width:100%}.mw-parser-output table.commons-file-information-table>tbody>tr,.mw-parser-output.fileinfotpl-type-information>tbody>tr{vertical-align:top}.mw-parser-output table.commons-file-information-table>tbody>tr>td,.mw-parser-output table.commons-file-information-table>tbody>tr>th,.mw-parser-output.fileinfotpl-type-information>tbody>tr>td,.mw-parser-output.fileinfotpl-type-information>tbody>tr>th{padding:4px}.mw-parser-output.fileinfo-paramfield{background:#ccf;text-align:right;padding-right:0.4em;width:15%;font-weight:bold}.mw-parser-output.commons-file-information-table+table.commons-file-information-table,.mw-parser-output.commons-file-information-table+div.commons-file-information-table>table{border-top:0;padding-top:0;margin-top:-8px}@media only screen and (max-width:719px){.mw-parser-output table.commons-file-information-table,.mw-parser-output.commons-file-information-table.fileinfotpl-type-information{border-spacing:0;padding:0;word-break:break-word;width:100%!important}.mw-parser-output.commons-file-information-table>tbody,.mw-parser-output.fileinfotpl-type-information>tbody{display:block}.mw-parser-output.commons-file-information-table>tbody>tr>td,.mw-parser-output.commons-file-information-table>tbody>tr>th,.mw-parser-output.fileinfotpl-type-information>tbody>tr>td,.mw-parser-output.fileinfotpl-type-information>tbody>tr>th{padding:0.2em 0.4em;text-align:left;text-align:start}.mw-parser-output.commons-file-information-table>tbody>tr,.mw-parser-output.fileinfotpl-type-information>tbody>tr{display:flex;flex-direction:column}.mw-parser-output.commons-file-information-table+table.commons-file-information-table,.mw-parser-output.commons-file-information-table+div.commons-file-information-table>table{margin-top:-1px}.mw-parser-output.fileinfo-paramfield{box-sizing:border-box;flex:1 0 100%;width:100%}} Description: English: Entamoeba histolytica in a fecal prep (commercial slide) 1000x oil. Date: 19 September 2022, 08:32:01. Source: Own work. Author: The Other 95%.

Summary.mw-parser-output table.commons-file-information-table,.mw-parser-output.fileinfotpl-type-information{border:1px solid #a2a9b1;background-color:#f8f9fa;padding:5px;font-size:95%;border-spacing:2px;box-sizing:border-box;margin:0;width:100%}.mw-parser-output table.commons-file-information-table>tbody>tr,.mw-parser-output.fileinfotpl-type-information>tbody>tr{vertical-align:top}.mw-parser-output table.commons-file-information-table>tbody>tr>td,.mw-parser-output table.commons-file-information-table>tbody>tr>th,.mw-parser-output.fileinfotpl-type-information>tbody>tr>td,.mw-parser-output.fileinfotpl-type-information>tbody>tr>th{padding:4px}.mw-parser-output.fileinfo-paramfield{background:#ccf;text-align:right;padding-right:0.4em;width:15%;font-weight:bold}.mw-parser-output.commons-file-information-table+table.commons-file-information-table,.mw-parser-output.commons-file-information-table+div.commons-file-information-table>table{border-top:0;padding-top:0;margin-top:-8px}@media only screen and (max-width:719px){.mw-parser-output table.commons-file-information-table,.mw-parser-output.commons-file-information-table.fileinfotpl-type-information{border-spacing:0;padding:0;word-break:break-word;width:100%!important}.mw-parser-output.commons-file-information-table>tbody,.mw-parser-output.fileinfotpl-type-information>tbody{display:block}.mw-parser-output.commons-file-information-table>tbody>tr>td,.mw-parser-output.commons-file-information-table>tbody>tr>th,.mw-parser-output.fileinfotpl-type-information>tbody>tr>td,.mw-parser-output.fileinfotpl-type-information>tbody>tr>th{padding:0.2em 0.4em;text-align:left;text-align:start}.mw-parser-output.commons-file-information-table>tbody>tr,.mw-parser-output.fileinfotpl-type-information>tbody>tr{display:flex;flex-direction:column}.mw-parser-output.commons-file-information-table+table.commons-file-information-table,.mw-parser-output.commons-file-information-table+div.commons-file-information-table>table{margin-top:-1px}.mw-parser-output.fileinfo-paramfield{box-sizing:border-box;flex:1 0 100%;width:100%}} Description: Fixed smear showing amoebic infection. Date: 12 October 2012, 18:05. Source: Entamoeba histolytica on fixed smear. Author: Iqbal Osman from Durban, North Coast, South Africa.

Description: English: Entamoeba histolytica. Date: 1 April 2005, 15:03:27. Source: Own work. Author: Punlop Anusonpornperm.

Summary.mw-parser-output table.commons-file-information-table,.mw-parser-output.fileinfotpl-type-information{border:1px solid #a2a9b1;background-color:#f8f9fa;padding:5px;font-size:95%;border-spacing:2px;box-sizing:border-box;margin:0;width:100%}.mw-parser-output table.commons-file-information-table>tbody>tr,.mw-parser-output.fileinfotpl-type-information>tbody>tr{vertical-align:top}.mw-parser-output table.commons-file-information-table>tbody>tr>td,.mw-parser-output table.commons-file-information-table>tbody>tr>th,.mw-parser-output.fileinfotpl-type-information>tbody>tr>td,.mw-parser-output.fileinfotpl-type-information>tbody>tr>th{padding:4px}.mw-parser-output.fileinfo-paramfield{background:#ccf;text-align:right;padding-right:0.4em;width:15%;font-weight:bold}.mw-parser-output.commons-file-information-table+table.commons-file-information-table,.mw-parser-output.commons-file-information-table+div.commons-file-information-table>table{border-top:0;padding-top:0;margin-top:-8px}@media only screen and (max-width:719px){.mw-parser-output table.commons-file-information-table,.mw-parser-output.commons-file-information-table.fileinfotpl-type-information{border-spacing:0;padding:0;word-break:break-word;width:100%!important}.mw-parser-output.commons-file-information-table>tbody,.mw-parser-output.fileinfotpl-type-information>tbody{display:block}.mw-parser-output.commons-file-information-table>tbody>tr>td,.mw-parser-output.commons-file-information-table>tbody>tr>th,.mw-parser-output.fileinfotpl-type-information>tbody>tr>td,.mw-parser-output.fileinfotpl-type-information>tbody>tr>th{padding:0.2em 0.4em;text-align:left;text-align:start}.mw-parser-output.commons-file-information-table>tbody>tr,.mw-parser-output.fileinfotpl-type-information>tbody>tr{display:flex;flex-direction:column}.mw-parser-output.commons-file-information-table+table.commons-file-information-table,.mw-parser-output.commons-file-information-table+div.commons-file-information-table>table{margin-top:-1px}.mw-parser-output.fileinfo-paramfield{box-sizing:border-box;flex:1 0 100%;width:100%}} Description: This image is in the public domain and thus free of any copyright restrictions. Courtesy of CDC.gov prep4md. Date: 13 November 2008, 17:56. Source: Entamoeba hitolytica trophozoite. Author: Yasser from Cairo.

Description: English: E. histolytica/E. dispar cyst in a concentrated wet mount stained with iodine. The cysts are spherical and often have a halo. The cyst appears uninucleate. Source: http://dpd.cdc.gov/DPDx/HTML/ImageLibrary/Amebiasis_il.htm. Author: CDC’s Division of Parasitic Diseases.

Description: English: Entamoeba histolytica multiply by binary fission.Español: Entamoeba histolytica multiplícandose por fisión binaria. Date: 12 September 2014, 16:39:49. Source: Own work. Author: Juan Carlos Fonseca Mata.