LPS-induced leukocyte adhesion is decreased in Tph1^−/− mice. (A) Leukocyte adhesion 4 hours after intraperitoneal injection of 20 mg/kg LPS in WT and Tph1^−/− mice. (B) Leukocyte adhesion in chronically fluoxetine-treated mice 4 hours after intraperitoneal injection of LPS. N = 10. Bar represents 50 μm.