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IFN-γ production in response to the positive control PHA (a) or a mix of ML1601c peptides no. 11 and no. 16 (b) measured after 24 h culture of undiluted whole blood derived from 34 Ethiopian healthy controls (ECs) derived from areas with low endemicity for leprosy (EClow: n = 16) or from areas highly endemic for leprosy (EChigh: n = 18).
