Which of the following is not a derivative of the amino acid (Tryptophan)?
A. Melatonin
B. Serotonin
C. Creatine
D. Niacin
Which of the following is not a derivative of the amino acid (Tryptophan)?
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answerhappygod
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Which of the following is not a derivative of the amino acid (Tryptophan)?
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