pDCs are required for proper inflammatory responses during Chlamydia pneumoniae infection in mice.

(A) C57Bl/6 mice were infected with 3.5×10⁶ IFU CP i. t. Mice were injected i. p. with either 500 µg mAb 927 or IgG control (n = 10) every other day starting at day -1 and survival was assessed. (B–E) C57Bl/6 mice were infected with 1×10⁶ IFU CP i. t. and were injected i. p. with either 500 µg mAb 927 or IgG control (n = 7–10) every other day. Mice were sacrificed on days 3, 5, 14, and 21 after infection. Lungs were analyzed by (B) H&E staining (100x), (C) inflammation score, (D) BALF cell count, and (E) bacterial burden. Data for all experiments shown represent at least two independent experiments (pooled together). *p<0.05, **p<0.01, ***p<0.001 (Student's t test used unless otherwise noted).