Figure 4

Intravital fluorescence microscopy images of the mouse carotid artery. Interactions of leukocytes are virtually absent in unstimulated mice (left). TNF-α stimulation effectively increases the number of leukocytes interacting with the endothelium (right). In the right picture the left wall of the artery is out of focus. Leukocytes are Rhodamine labeled. Scale bar = 50 μm.