Now, what I'd like to discuss in Dyslexia is how the carbon dioxide is actually transported inside our cardiovascular system from the tissue to the lungs. And let's begin by focusing on the following diagram. So, in this diagram, we have the cells of the exercising tissue. We have the endothelium of the blood capillary. This is the blood plasma and this is the red blood cell. So let's suppose I move my hand back and forth.