the content and turnover of dopamine , norepinephrine and 5-hydroxytryptamine ( serotonin ) , and the content of their respective major metabolites were evaluated in 19 discrete brain areas of rats exposed to conditioned emotional response ( cer ) , and in control groups which received either equivalent yoked shock ( shock only ) or compound stimulus presentation ( tone only ) .
C0028351
norepinephrine
C0036974
shock