Figure 1. Dependency of leukocyte adhesion and transmigration on the distance of microinjection from the vessel.

Leukocyte adhesion (A) and transmigration (B) were analyzed 60 min after microinjection of MIP-1α performed at distances of 25–50, 75–100, and 175–200 µm from the postcapillary venule. Both parameters were observed in ROIs (100×50 µm) along the venule (mean±SEM; n = 3).