Localization

Mainly in the small intestine, in enterocytes at the tips of villi, less frequently in the colon as well, in the bile ducts and gallbladder. Intracellular localization in plasma without parasitophorous vacuole. Symptoms: chronic diarrhea, also with cholangiopathy; asymptomatic infections are known to occur.

Diagnosis:

Detection of tiny spores (1.1-1.6 x 0.7-0.9 im) in stained stool smears. The spores have four to seven polar tubule windings in a double row (in other species: single row!).

■ Encephalitozoon intestinalis (formerly Septata intestinalis).

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Essentials of Human Physiology

Essentials of Human Physiology

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