Video recorded through a microscope shows platelets (bright white orbs) moving through mice blood vessels and adhering to the vessel lining. New research from Dr. Jonathan Lindner and others explain how inflammatory cells and platelets more easily stick to the inner lining of arteries – particularly where there was already plaque – after mice had experienced a heart attack or stroke. Those cells and platelets caused plaque to become unstable and contribute to blood clots that led the mice to have another heart attack or stroke. OHSU