Endothelium
The endothelium is a thin, smooth layer found in blood vessels, lymphatic vessels and the heart. It is made up of many endothelial cells. (http://www.ncbi.nlm.nih.gov/books/NBK26848/)
The endothelium is a thin, smooth layer found in blood vessels, lymphatic vessels and the heart. It is made up of many endothelial cells. (http://www.ncbi.nlm.nih.gov/books/NBK26848/)