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A parasitologist's view of the world
Welcome to Parasite Case of the Week
Every week I will post a new Case, along with the answer to the previous case. Please feel free to write in with your answers, comments, and questions. Also check out my image archive website at http://parasitewonders.com. Enjoy!
The Fine Print:
Please note that all opinions expressed here are mine and not my employer. Information provided is for educational purposes only. It is not intended as and does not substitute for medical advice. I do not accept medical consults from patients.
The Fine Print:
Please note that all opinions expressed here are mine and not my employer. Information provided is for educational purposes only. It is not intended as and does not substitute for medical advice. I do not accept medical consults from patients.
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14 comments:
(Neo)Balantidium/Balantioides coli cysts
Based on the size and presence of a bean shaped macronucleus, I would guess Balantidium coli trophozoite. I am unsure of whether I can see cilia, or if this just the quality of the image. I am also unsure of why the object is so green!
Balantidium coli; SO cool.
The kidney-bean shaped ciliate macronucleus is the somatic nucleus of the organism, which contains the transcriptionally-active genes amplified and reorganized into literally hundreds of chromosomes. When the ciliate reproduces sexually by conjugation, the micronucleus (containing the canonincal 'genome' of the organism) does the dirty deed, then a new macronucleus is generated by processes still being described.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3746294/
Based on the size and shape of the organism,it is most probably Balantidium coli trophozoite
What a beautiful case. The bean shape nucleus is so well captured and the cilia so visible in the second picture.
My thoughts are how do we differentiate between B. coli and B. suis? Another question is that can humans be infected by the ones of the pigs? America is so clean and each time we find a specimen positive with B. coli, the finding is a specially exciting trophy.
Florida Fan
Balantidium coli!
One of my favorites, with its boring motility.
BW in Vt
Balantidium coli
Balantidium coli, trophozoites
Balantidium coli
It is Balantidium coli. The typical bean shaped macronucleus.
Balantidium coli!
Agreed! Although I think that the latest taxonomy calls it “Balantioides coli”.
This cool critter (thanks Sheldon for pointing out the complexity of this ciliate) changes names more rapidly than one can say “Neobalantidium”!
Balantidium coli
Was it a dream or did it really happen. Before all this virus nonsense I remember attending a party in a beautiful home. All sorts of parasites were in attendance. The hostess was Balantidium (the Bell of the ball). Was this just my imagination or did it truly happen. If only there were a picture.
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