blodhjernebarrierens
The blood-brain barrier, or blodhjernebarrieren in Danish, is a highly selective semipermeable border of endothelial cells that prevents blood-borne toxins and pathogens from entering the brain. It is composed of brain capillaries that are unique in that they have tight junctions between the cells, effectively sealing the gaps that normally exist between endothelial cells in other parts of the body. This tight structure prevents most molecules from passing through and entering the brain tissue.
The blood-brain barrier is crucial for maintaining the delicate environment of the central nervous system, which
The precise mechanisms by which the blood-brain barrier functions are complex and involve various transport systems.