Table 1.
Transport systems at the BBB
| Transport systems | Substrates |
|---|---|
| 1. Amine | Choline |
| 2. Nucleoside | Adenosine |
| 3. Hexose | D-Glucose |
| 4. Mono carboxylic acid | Lactate |
| 5. Neutral amino acids | Phenylamine |
| 6. Basic amino acids | Arginine |
| 7. Purine | Adenine |
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