critical analysis of biochemical and pharmacological studies shows that a clear-cut distribution of brain catecholamines in two compartments [ 'newly synthesized ' ( ns ) and 'main storage ' ] is not at all established , and moreover that there is no adequate proof that the difference in turnover rates attributed to these two supposed pools is due to a preferential extraneuronal release of ns-ca during nerve function rather than to a preferential ( nonfunctional ) intraneuronal deamination of ns-ca , or at least of ns-da .
C0007412
ca
C0013030
da