The MAGL inhibitor JZL184 (40 mg/kg) and R-flurbiprofen (9 mg/kg) were purchased from Cayman Chemicals, Ann Arbor, MI; Lumiracoxib (5 mg/kg) from Selleck Chemicals, TX, USA; and LM-4131 (10 mg/kg), was synthesized as previously described29 (link); and were administered via intraperitoneal injection (1 ml/kg DMSO) 3 h before sacrifice. LPS (Sigma-Aldrich, St. Louis, MO), was administered via intraperitoneal injection (10 ml/kg; pyrogen-free saline), with two injections of LPS given, 24 h apart. Four hours after the second injection, mice were treated with JZL184 (40 mg/kg). Mice were sacrificed 3 hours after JZL184 or DMSO injection.