Vascular endothelium: recent advances and unanswered questions.
D000818:Animals; D001692:Biological Transport; D001808:Blood Vessels / Q000166:cytology*; D002463:Cell Membrane Permeability; D002478:Cells, Cultured; D004727:Endothelium / Q000166:cytology; D006801:Humans; D007365:Intercellular Junctions; D008722:Methods; D014652:Vascular Diseases / Q000209:etiology