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Individual IFN-γ responses of nine TB patients and nine BCG-vaccinated healthy donors stimulated with single TB10.4 peptides or TB10.4 peptide mixture. Each symbol represents one donor. The maximum stimulation in the presence of either 1 or 5 μg of antigen/ml is given. Mean values (solid bars) are indicated. Responses of >200 pg of IFN-γ/ml (dotted line) are regarded as positive.
