Definition: A genus of protozoan parasites, formerly considered part of the family Toxoplasmatidae, class Sporozoea, but now recognized as a member of the protozoan phylum Microspora, family Nosematidae. Encephalitozoon cuniculi is considered the primary microsporan parasite of mammals, commonly found in the brain and kidney tubules of rodents and carnivores and causing nosematosis in rabbits.
[encephalitis + G. zoon, animal]
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