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A member asked:

Any ideas why doesn't blood normally clot in the blood vessel ?

A doctor has provided 1 answer
Dr. Michael Schwartz answered

Blood thinners: Blood vessels are lined with cells called endothelial cells. These cells secrete small amounts of "blood thinners" to keep blood from clotting.

Dr Patel agreed

Answered 2/18/2015

3.8k views

Thank

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