in anesthetized and paralyzed rats , using a push-pull perfusion technique , we examined the effect of bilateral vagal stimulation on the release of l- [ 3h ] glutamic acid ( l- [ 3h ] glu ) from the nucleus tractus solitarius ( nts ) , after preloading the tissue either with l- [ 3h ] glu or l- [ 3h ] glutamine ( l- [ 3h ] gln ) .
C0061472
glu
C0017797
gln