1. | Schizophrenia (Dementia Praecox)
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2. | Phenylketonurias (Phenylketonuria)
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3. | Infections
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4. | Attention Deficit Disorder with Hyperactivity (Attention Deficit Hyperactivity Disorder)
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1. | Phenylalanine Hydroxylase (Phenylalanine 4 Monooxygenase)
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2. | Phenylalanine (L-Phenylalanine)
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3. | Enzymes
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4. | phenylalanine decarboxylase
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5. | sapropterin (tetrahydrobiopterin)
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