
Blastocystis is a genus of single-celled protozoan parasites belonging to a group of organisms known as the Stramenopiles (also called Heterokonts) that includes algae, diatoms, and water molds. Blastocystis comprises several species, living in the gastrointestinal tracts of species as diverse as humans, farm animals, birds, rodents, reptiles, amp...
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http://en.wikipedia.org/wiki/Blastocystis

A genus of protozoa of the suborder blastocystina. It was first classified as a yeast but further studies have shown it to be a protozoan. ... (12 Dec 1998) ...
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http://www.encyclo.co.uk/local/20973

Type: Term Pronunciation: blas′tō-sis′tis Definitions: 1. A genus of yeastlike parasites in the digestive tract of mammals; generally considered nonpathogenic. Its relationship to fungi is now being questioned owing to protozoan characteristics, such as lack of cell walls, a membrane-bound central body, pseudopod activity, protozoa...
Found on
http://www.medilexicon.com/medicaldictionary.php?t=10595
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