How our blood vessels age from within

With every heartbeat, blood is pumped through a vast network of vessels throughout our body, delivering vital oxygen, nutrients and other essential substances to even its most remote corners. But these vessels are far more than passive tubes: Their inner walls are covered by a thin layer of specialized cells called endothelial cells, which regulate blood flow, control what passes into surrounding tissues and help coordinate responses to injury.

Read it at Medical Xpress ↗

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