Additional file 1: NLRP6 is involved in the recruitment of macrophages and neutrophils in pulmonary infection with P. multocida. WT and Nlrp6-/- mice were intranasally infected with 20 µL P. multocida (1000 CFU) and the same volume of sterilized PBS were used as control. Flow cytometry was used to analyze the recruitment of neutrophils and macrophages after 24 h infection. (A, B, E, F). Aseptic PBS infection group (control group). (C, D, G, H). P....