Assertion: brain's neurotransmitter | /r/ObjectUse | used in the vertebrate brain
Facets:
value: most widely
type: DEGREE
Source sentences:
text: The two neurotransmitters that are used most widely in the vertebrate brain are glutamate, which almost always exerts excitatory effects on target neurons, and gamma-aminobutyric acid (GABA), which is almost always inhibitory.