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Ultrastructural localisation of serotonin and substance P in vascular endothelial cells of rat femoral and mesenteric arteries

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Summary

An electron microscopic-immunocytochemical study has been made on the localisation of serotonin and substance P in endothelial cells of femoral and mesenteric arteries of the rat. In the femoral and mesenteric arteries, less than 10% of the endothelial cells showed positive immunolabelling for these substances. The distribution of serotonin and substance P in endothelial cells was similar in both arteries. The immunoprecipitate was confined to the cytoplasm, including subcellular organelles. The results are discussed in terms of endothelial mechanisms of local control of blood flow.

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Loesch, A., Burnstock, G. Ultrastructural localisation of serotonin and substance P in vascular endothelial cells of rat femoral and mesenteric arteries. Anat Embryol 178, 137–142 (1988). https://doi.org/10.1007/BF02463647

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