Intravascular monocyte–neutrophil interactions in an uninflamed glomerulus. Movie of a glomerulus in a posthydronephrotic kidney of an untreated Cx3cr1GFP/+ mouse, showing several neutrophils (red, labeled with anti–Gr-1-PE) undergoing interactions with GFP+ monocytes (green). (Spinning disk confocal microscopy; duration in real time, 10 min.) (Scale bar: 10 μm.)