Tainted Blood: Smoker's Blood Revealed

Looks like a cigarette one side and an artery on the other.  This model graphically shows the damage that smoking does to the bloodstream.  
This includes carbon monoxide pushing out the oxygen, toxins In tobacco smoke circulating In the blood and arteriosclerosis plaque building up on the walls of the blood vessel.  Comes with an explanatory tent card giving additional information about the damaging effects of smoking.