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Discussion Starter #1
If you restrict phenylalanine from the diet then which amino acid you have to supplement to avoid negative Nitrogen balance?
A- Lysine
B- Isoleucine
C- Argninie
D- Tyrosine
E- Tryptophan
 

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Discussion Starter #3
Phenylalanine is an essential amino acid and tyrosine is derived from it, if no phenylalanine then tyrosine becomes essential and you have to give it to the patient
 
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