FIG. 4.
NTHI-I bacteria recovered in the BAL 4 h after challenge with live bacteria. Nonimmune rats (n = 8) were sham treated, 10-μg OMP26 group was IPP immunized and i.t. boosted with 10 μg of OMP26 (n = 7), 40-μg OMP26 group was IPP immunized with 40 μg of OMP26 and i.t. boosted with 10 μg of OMP26 (n = 4), NTHI-I group was IPP immunized and i.t. boosted with killed bacteria (n = 5). *, P < 0.005 compared to nonimmune group. Live bacteria inoculum contained 7 × 109 CFU per ml as determined by plating of serial dilution.