Fig. 2.
Leukocyte adherence to endothelium and extravasation.
Video photomicrographs show leukocytes adherent to endothelium (A) or migrated from rat mesenteric microvessels (B) in response to either 1.5 × 10−8 M iTCC, 10−7 M C5a, or control saline. Leukocytes labeled in vivo with AO were made visible by fluorescence epi-illumination and appeared as bright spheres. Magnifications, 400× (A) and 100× (B).