Glucose from blood enters the brain by a transport protein. Glucose is the primary energy substrate of the brain. Glucose transport protein (GLUT-1) is highly enriched in brain capillary endothelial cells.These transporters carry glucose molecules through the blood brain barrier.lucose is the primary energy substrate of the brain. Glucose transport protein (GLUT-1) is highly enriched in brain capillary endothelial cells. These transporters carry glucose molecules through the blood brain barrier.
Seeing the changing autumn leaves is a longstanding Colorado tradition that generally takes place mid-September to mid-October each year, and AAA Colorado, the Colorado Department of Transportation (CDOT), and Colorado Parks and Wildlife want to let people know where to drive and how to drive safely for some of the best views this season.
There'll be outlier trees-- I've seen sick trees drop their leaves in August, and leafed deciduous trees in January as far north as Manhattan-- but there's a clear peak. In tropical climates, there's more variation in when the trees drop their leaves: it has to do with wet and dry seasons, soil quality, wind and elevation. To get a view that looks like autumn in Mexico, for example, you have to go into the mountains.