America needs stents in its arteries to survive

A stent is a tube of a metallic alloy or polymer inserted into the lumen of an anatomic vessel or duct to keep the passageway open. Image: US NIH

A stent is a tube of a metallic alloy or polymer inserted into the lumen of an anatomic vessel or duct to keep the passageway open. Image: US NIH
A stent is a tube of a metallic alloy or polymer inserted into the lumen of an anatomic vessel or duct to keep the passageway open. Image: US NIH

By lieshunter

Be aware of the grandpas!

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