Lymphatic endothelial and smooth-muscle cells in tissue culture

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Abstract
Summary Endothelial and smooth-muscle cells from bovine mesenteric lymphatic vessels have been collected and cultured in vitro. The endothelial cells grew as a monolayer exhibiting a “cobblestone” appearance with individual cells tending to be more flattened at confluence than their blood vascular counterparts. Approximately 30% of these cells expressed Factor VIII antigen compared with bovine mesenteric artery or human umbilical-vein endothelium in which the majority of cells were positive. The lymphatic smooth-muscle cells exhibited focal areas of multilayering and were Factor VIII negative. The availability of lymphatic endothelial and smooth-muscle cells in culture will provide a new tool for the investigation of the biological properties of the lymphatic vessels and their role in homeostasis.