A method for measuring hydroxylase cofactor activity in human cerebrospinal fluid is described The hydroxylase cofactor content of cerebrsopinal fluid from Parkinsonian patients is approximately 50 percent that of normal subjects A significant correlation between hydroxylase cofactor and the concentration of homovanillic acid in the cerebrospinal fluid was observed

http://science.sciencemag.org/content/sci/204/4393/624.full.pdf

Hydroxylase cofactor activity in cerebrospinal fluid of normal subjects and patients with Parkinson's disease

Simultaneous analysis of non-steroidal anti-inflammatory drugs and estrogenic hormones in water and wastewater samples using gas chromatography–mass spectrometry and gas chromatography with electron capture detection

The monoamine oxidase B inhibitor deprenyl potentiates phenylethylamine behaviour in rats without inhibition of catecholamine metabolite formation.

Mass fragmentographic quantitation of glutamic acid and γ-aminobutyric acid in cerebellar nuclei and sympathetic ganglia of rats

Evaluation of dopamine metabolism in rat striatum by a gas chromatographic technique.

Derivatization and gas chromatographic determination of some biologically important acids in cerebrospinal fluid

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Derivatization and gas chromatographic determination of some biologically important acids in cerebrospinal fluid