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Mean (n=6) ± SD of M. tuberculosisstrain H37Rv in lungs and spleen of infected mice after once-daily treatment for 5 days per week for 4 (a) and 6 wk (b) with INH+RIF+ETM+PZA. EC, early control; LC, late control; Chemo, chemotherapy; Immuno, immuntherapy; Chemo + Immuno, chemotherapy + immunotherapy. a, b and c are statistically significant (P<0.05).
