Whole-mount staining of mouse omentum. All microvessels, such as capillaries, venules and arterioles are labeled red with the pan-endothelial marker CD31, venules are labeled in blue with a monoclonal anti-DARC Ab developed in my lab. Hematopoietic cells are labeled in green with anti-CD45 Ab. Only venules expressing DARC are capable of efficient leukocyte recruitment from the blood.
