Monitoring of Neutrophil Recruitment to Mice Lungs During Pneumonic Plague.

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Early sensing of bacterial infection and the immediate recruitment of neutrophils to the lung is a major and decisive stage of the innate immune response to pulmonary bacterial infections. This chapter details the preparation of lung tissue suspensions from mice infected intra-nasally (I.N.) with the plague bacterium Yersinia pestis to study in vivo neutrophil responses to the infection. The samples were used for the quantification of neutrophil levels and for the characterization of the pro-inflammatory response required for neutrophil recruitment to the lung. The specific requirements for performing the procedures under Biosafety Level 3 containment and the proper handling and sterilization of the samples are discussed.