M.I. WALKER / SCIENCE PHOTO LIBRARY M.I. WALKER / SCIENCE PHOTO LIBRARY
Sleeping sickness. Light micrograph of Trypanosoma brucei, a cause of sleeping sickness, in blood. The long thin T. brucei (blue) can be seen amongst the white blood cells (large, blue) and red blood cells (small, green). The two morphologically identical species of this parasitic protozoan, or single-celled organism, are T. brucei gambiense and T. brucei rhodesiense. Trypanosomiasis, or sleeping sickness, occurs in tropical Africa, and is spread by the bite of the tsetse fly (Glossina sp.). Symptoms include headaches, confusion and severe tiredness. Unless treated with drugs, coma and death will result. Stained with Giemsa. Phase contrast. Magnification: x250 at 35mm size.
Model release not required. Property release not required.