Tissue from macroscopically healthy parts of nephrectomized kidneys. Endothelial cells were purified from the cell outgrowth of glomeruli twice using CD31 magnetic beads and cultured on fibronectin coated surface. Cells were not passaged more than eight times and stained with vWf, CD31, and after stimulation with TNF alpha also with CD62E/P. Protocol according to MicroSAGE adaptation of Velculescu, V. E., Zhang, L.,Vogelstein, B., and Kinzler, K. W. (1995) Serial Analysis of Gene Expression. Science 270, 484-487. Anchor enzyme: NlaIII.