Complementary and
Alternative Healing
University
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Tyrosine C9H11NO3
One of the twenty amino acids directly coded in proteins. It is abundant in cheese. It exists in many types of protein. It is a precursor of epinephrine, norepinephrine, thyroxine, triiodothyronine and melatonin. Nonessential in humans since it can be synthesised from phenylalanine.
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