(f) Formation of NETs (histone H3+; green) as assessed ex vivo by confocal microscopy in the cremaster muscle of WT mice 6 h after intra-scrotal injection of uPA-PAI-1, TNF, or saline, PECAM-1/CD31+ postcapillary venules (blue) and Ly-6G+ neutrophils (red) are depicted. Representative images are shown (scale bar: 50 µm). 