The blood-brain barrier.
D000596:Amino Acids / Q000378:metabolism; D000818:Animals; D001693:Biological Transport, Active; D001812:Blood-Brain Barrier; D001921:Brain / Q000378:metabolism; D002199:Capillary Permeability; D006601:Hexoses / Q000378:metabolism; D006801:Humans; D008563:Membrane Lipids; D008722:Methods; D009696:Nucleic Acids / Q000378:metabolism; D004364:Pharmaceutical Preparations / Q000378:metabolism; D010661:Phenylketonurias / Q000378:metabolism; D051381:Rats
D000596:Amino Acids; D006601:Hexoses; D008563:Membrane Lipids; D009696:Nucleic Acids; D004364:Pharmaceutical Preparations