from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An amino acid, C4H9NO2, that is not found in proteins, but occurs in the central nervous system and is associated with the transmission of nerve impulses.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An amino acid found in the nervous systems of vertebrates and acting as an inhibitory neurotransmitter. Abbreviated as GABA.
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