Blastocystis hominis 2 08.jpg

Taxonomy: Class Blastocystea
Animal: Blastocystis hominis 2 08.jpg
Sites: Gut
Comment:
Blastocystis hominis abnormal cyst. Large numbers of this unusual form were seen in the faeces of a patient with acute severe gastroenteritis. Symptoms resolved in 12 days without treatment and no cysts, erythrocytes or leucocytes were present in the faeces on discharge. These cysts were 5 or 6 microns wide, mostly multi-nuclei with elliptical band of condensed chromatin containing a small dense spot and large amounts of glycogen. (Normal cysts usually have only one nucleus which has a condensed crescentic band of chromatin). (EM by Deb Stenzel).

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