Sleeping sickness parasite

Sleeping sickness parasite

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Credit: JOHN DURHAM/SCIENCE PHOTO LIBRARY.

Caption: Light micrograph of blood infected with the parasitic protozoan, Trypanosoma rhodesiense, one of the agents of African sleeping sickness. The trypanosomes appear here as elongated, ribbon-like objects, stained purple; numerous red blood cells appear grey. T. rhodesiense is transmitted by bites from the tsetse fly Glossina morsitans: the other species causing sleeping sickness, T. gambiense, is transmitted by G. palpalis. After completion of their insect life-cycle stages, trypanosomes appear & multiply in the bloodstream. The characteristic lethargy caused by meningo- encephalitis appears after about a month. Magnification: X 250 at 35mm size.

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Keywords: african, african sleeping sickness, animal, flagellate, invertebrate, invertebrates, light micrograph, light micrograph lm, nature, parasite, protozoa, protozoan, sleeping sickness, trypanosoma rhodiense, wildlife, zoology

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