the release of 3h-catecholamines evoked by black widow spider venom gland extract ( bw-ge ) has been studied in the isolated rat hypothalamus ( ht ) , occipital cortex ( oc ) , preloaded with 3h-noradrenaline , and isolated caudate nucleus ( cn ) preloaded with 3h-dopamine .
C0007412
catecholamines
C0013030
dopamine