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St. Michael's Hospital Research Findings Breathe New Life Into Lung Disease  
10/25/2012 7:42:13 AM

It turns out the muscle cells on the outside of blood vessels have been wrongly accused for instigating lung disease. New research shows that while these muscle cells are responsible for constricting or dilating the blood vessels, they are not responsible for sensing the amount of oxygen that gets to the lungs. That message comes from the endothelial cells – special cells that line the blood vessels – along a "signalling pathway."