|any amino acid that is required by an animal for growth cannot be synthesized by the animal's cells|
|AAA, AAG, basic side chain|
arginine ar·gi·nine (är'jə-nēn')
An amino acid obtained from the hydrolysis or digestion of plant and animal protein.
|arginine (är'jə-nēn') Pronunciation Key
An amino acid that is essential for children but not for adults. Chemical formula: C6H14N4O2.