adrenaline , noradrenaline , dopamine and dihydroxyphenylalanine in brain tissue and dihydroxyphenylacetic acid in plasma have been determined by direct injection of brain homogenates or plasma into a liquid chromatographic system comprising three columns , one packed with a boronic acid gel and two with reversed-phase material .
C0014563
adrenaline
C0028351
noradrenaline