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Expression of vWF (green) and Cx40 (red) and merged images for pulmonary arterioles and capillaries (arrows) of Cx40+/+ mice and for arterioles of Cx40–/– mice. Scale bars: 10 μm. Note colocalization of vWF and Cx40 in pulmonary arterioles and capillaries of Cx40+/+ mice, indicative of endothelial Cx40 expression, was absent in Cx40–/– mice.
