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DTH responses at 3 weeks of infection in C57BL/6 (□) and C57BL/10 (○) mice. Footpad swelling was measured at different time points after injection of either 10 μg of M. avium CFP antigen or PBS. Data are shown as the means of the difference between the swellings in the footpad injected with antigen and in the contralateral one, injected with PBS alone, ± one standard deviation. Differences between the two strains were not statistically significant as determined by the Student's t test.
