Medical Definition of Lysine
Lysine: An amino acid, one of the 20 building blocks of protein. A dietary essential amino acid, lysine is present in many proteins and is necessary for optimal growth in childhood. Symbol: Lys.
Source: MedTerms™ Medical Dictionaryhttp://www.medicinenet.com/script/main/art.asp?articlekey=22830
Last Editorial Review: 6/9/2016
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