Well, the way that our body solves this problem is by transforming the carbon dioxide into a slightly different form to make it more soluble in our blood plasma. So when the cells of our tissue are exercising, they're producing a bunch of CO2 gas molecules. And those CO2 gas molecules dissolve or diffuse across the cell membrane and enter the extracellular matrix. And then the CO2 is moved across the capillary walls. It diffuses across the capillary wall, our walls, and enters the red blood cells found inside the blood plasma of our capillaries. And once inside the red blood cells, inside the red blood cells, we have a special type of catalytic enzyme known as our carbonic anhydrase.