関連ワード:  function of endothelium    function of endothelium in blood vessels    function of endothelium in cornea    function of endothelium in artery    function of endothelium lining the capillary    what is the function of the endothelium in capillaries    function of endothelium in plants    function of endothelium in veins    function of endothelium reticulum    function of endothelium tissue