(a) Deposition of uPA or PAI-1 (green) in the cremaster muscle of WT mice as assessed separately ex vivo by confocal laser scanning microscopy 6 h after intrascrotal injection of TNF or saline, PECAM-1/CD31+ postcapillary venules (red) and Ly-6G+ neutrophils (purple) are depicted. Representative images are shown (scale bar: 50 µm). 