Color researchers at Queen Mary University of London investigated the Quattron technology and found that although Quattron does have four physical color sub-pixels it does not have a fourth primary in the backlight to drive it (yellow is approximately 575 nm).
Flashcards âº Chapt. 10 - Cardiovascular System Diseases & Illnesses. More from Angela Saunders Chapt. 1 - The Microbia Chapt. The condition where fat-containing substances are deposited on the coronary artery lumens causing a narrowing is coronary artery disease.
Other causes of narrowing (stenosis) includes 1  : Mass pressing against the artery as is the cases with a neighboring tumor, fluid filled cyst or the pregnant uterus. In pregnancy, the narrowing is temporary and is relieved upon change of position.  Infection causes inflammation and thereby swelling of the arterial wall.