Diffusing Capacity. 1  Diseases associated with increased pulmonary blood flow (e.g., left-to-right intracardiac shunts) 2  Diseases associated with polycythemia. 3  Exercise. 4  Pulmonary hemorrhage. 5  DLCO, diffusing capacity of carbon monoxide.
arrow - a projectile with a straight thin shaft and an arrowhead on one end and stabilizing vanes on the other; intended to be shot from a bow arrowhead - the pointed head or striking tip of an arrow bow and arrow - a weapon consisting of arrows and the bow to shoot them
1 Arrows, showing what's called flow of control in computer science. An arrow coming from one symbol and ending at another symbol signifies flow passes to the symbol the arrow points to.  Processing steps, represented as rectangles. Examples: Add 1 to X; replace identified part; save changes or similar.