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Distribution of OD values of 71 TST-positive and 90 TST-negative serum samples. Sera from 71 TST-positive and 90 TST-negative individuals were evaluated for antibody reactivity with 12 antigens using indirect ELISA. The levels of antibodies against these antigens in TST-positive monkeys were significantly higher than those in TST-negative ones (P < 0.001, Student's t test).
