Brain capillary endothelial cells forming the bloodâbrain barrier are polarised and possess distinct transport proteins in the luminal and abluminal plasma membranes. This illustration depicts a model describing some of these transporters.
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Amperage is a measure of the electrical current flowing through a circuit. Current is measured in amperes or amps. You must use the correct size wire for the amperage requirement of the circuit to prevent the wire from over heating. The number and type of electrical devices connected to a circuit determine the amperage requirement of the circuit.