Answer to Case 589

Answer to Parasite Case of the Week 589:Iodamoeba buetschliicysts and trophozoites.Note that the trophozoites and cysts have a single nucleus with a large, often eccentric, karyosome. Cysts characteristically have a large glycogen-filled cytoplasmic vacuole that is highlighted when using iodine on a wet mount preparation. The glycogen vacuole does not stain with trichrome or iron hematoxylin, and instead appears as an empty space as in this case:This organism gets its genus name from its iodine staining property (iod + amoeba), whereas the species name honors the German protistologist, Johann Adam Otto B ütschli. Note that the term " buetschlii " is used when citing a formal scientific name rather than " b ütschlii " as per nomenclature standards.Blaine pointed out there there were also someBlastocystisalong for the ride (or vice versa): Old One also noted that the large vacuole looks a bit like a mask, which is a good reminder to wear a mask when going out in public to protect others around you.
Source: Creepy Dreadful Wonderful Parasites - Category: Parasitology Source Type: blogs