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phenylalanine
noun
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How to pronounce phenylalanine:

Definition of phenylalanine:

phenylalanine (noun):
an essential amino acid c9h11no2 that is converted in the normal body to tyrosine
noun. an essential amino acid found in proteins and needed for growth of children and for protein metabolism in children and adults; abundant in milk and eggs; it is normally converted to tyrosine in the human body.

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