So we find them on dendrites as well as on exons of neurons found in the brain. Now, both of these glucose transporters, glute one and glute three, basically have a relatively low Km value. Now, before we talk about that, let's define what the concentration of glucose is normally in our blood. So the blood glucose levels are maintained at around a value of 5 million molar. That's the concentration. And the Km value of these two transporters is around 1 million molar.