Figure 1: B7-H1 expression in patient and donor DC cultures. A. Data are presented as percentage of B7-H1+ DCs (M ± S.E.) in DC cultures of healthy donors (donors; n=19) and TB patients (TB; n=44), including PPD-reactive (PPD+; n=32) and PPD-anergic patients (PPD-; n=12); *-pU<0.05 vs healthy donors. B. Open histogram represents stained cells (donor DCs) and the filled histogram represents isotype specific control. C. B7-H1 expression in PPD-reactive (grey line) and PPD-anergic (black line) patient DC cultures.