The Nervous System Damage Symptomatic of Untreated PKU Is Due

question 21

Multiple Choice

The nervous system damage symptomatic of untreated PKU is due to

• A) too much phenylalanine being transported into nerve cells.
• B) too few of the other seven neutral amino acids being transported into nerve cells.
• C) accumulation of the breakdown products of phenylalanine in nerve cells.
• D) none of these.
• E) it is not clearly known.

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