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District map of Uganda illustrating type and distribution of hemoglobin variants. Each circle represents an individual variant. The district of Kampala is depicted in the lower right corner. Blue circles, Hb Kenya; red circles, Hb P-Nilotic; orange circles, Hb G-Pest; green circles, Hb Stanleyville II; yellow circles, Hb O-Arab; gray circles, unidentified variants.
