*2.1. Reagents and Chemicals*

Dexamethasone, dimethyl sulfoxide (DMSO), LPS (*Escherichia coli* serotype O55:B5), and ovalbumin were purchased from Sigma-Aldrich (St. Louis, MO, USA). The 12-LO inhibitor baicalein and BLT2 antagonist LY255283 were purchased from Enzo Life Sciences, Inc. (Farmingdale, NY, USA) and Cayman Chemical (Ann Arbor, MI, USA), respectively. Antibodies against BLT2, 12-LO, and GAPDH were obtained from Enzo Life Sciences, Inc., Invitrogen (Rockford, IL, USA), and Santa Cruz Biotechnology, Inc. (Dallas, TX, USA), respectively. Neutralizing monoclonal antibodies against G-CSF and the IgG1 isotype control were obtained from R&D Systems (Minneapolis, MN, USA).
