Threonine: An amino acid, one of the 20 building blocks of protein. A dietary essential amino acid, threonine is necessary for optimal growth in childhood but its exact roles in metabolism are unknown. Symbol: Thr.

Threonine: An amino acid, one of the 20 building blocks of protein. A dietary essential amino acid, threonine is necessary for optimal growth in childhood but its exact roles in metabolism are unknown. Symbol: Thr.
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