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Photo taken on February 25, 2015, shows a giant rat used to detect tuberculosis-causing bacteria at Apopo research center in Eduardo Mondlane University in Maputo, Mozambique. Giant rats may strike fear and disgust into the hearts of homeowners worldwide, but researchers in impoverished Mozambique are improbably turning some of them into heroes. At Eduardo Mondlane University in the capital Maputo, nine giant rats are busy at work – sniffing out tuberculosis-causing bacteria from rows of sputum samples. (Photo by Adrien Barbier/AFP Photo)
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