Figure 1: Distribution of IFN-? responses in immigrant females and their Korean spouses. IFN-? responses to PPD were measured in immigrant females (a), and in Korean males (b). IFN-? responses to ESAT-6 were measured in immigrant females (c), and in Korean males (d). IFN-? responses to CFP-10 were measured in immigrant females (e) and in Korean males (f). IFN-? responses were defined as negative (<125pg/ml) or positive (=125 pg/ ml).