Tuesday, June 9, 2020

Case of the Week 594

This week's case was donated by Florida Fan - a lovely classic protozoan parasite seen in a concentrated wet prep of stool, and trichrome-stained specimen. Each line on the scale bar in the first 2 images represents 2.5 micrometers. Identification?





9 comments:

Corrado Minetti said...

Considering the number of nuclei in the second picture, Entamoeba coli?

Blaine A. Mathison said...

Whenever I lecture or teach on this subject, I always ask my students or the audience if they can count to 5. And if they can, then they should be capable of identifying this species!

That's all I will say until more answers roll in...

Marc Couturier said...

CNN would say this is Escherichia coli. ;)

Blaine A. Mathison said...

They already have! And I have screen captured it for posterity!

Paul Divis said...

Entamoeba coli. Cyst has 8 nuclei.

Anonymous said...

Entamoeba coli

Anonymous said...

Cyst and trofozoite Entamoeba coli

Bernardino Rocha said...

Agree with cysts, trophozoite and precyst of Entamoeba coli.

Unknown said...

Entamoeba coli cyst having about 8 nuclei