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The innermost layer of an artery or vein, made up of one layer of endothelial cells and supported by an internal elastic lamina.
Can you identify the endothelium, and underlying connective tissue of the tunica intima layer in this photograph?
The tunica intima has an endothelium of flattened endothelial cells.
B. Venous valves are folds of tissue formed from the endothelial lining of the tunica intima.
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