the effects of 3 , 4-dihydroxyphenylalanine ( l-dopa ) and l-tyrosine on the efflux of free and conjugated da , 3 , 4-dihydroxyphenylacetic acid ( dopac ) and homovanillic acid from slices from striatum in rats were studied under quiescent conditions and during release evoked by 40 mm k+ or by 5 x 10 ( -5 ) m phenylethylamine ( pea ) .
C0013023
dihydroxyphenylalanine
C0023570
l-dopa