to test the hypothesis that embryonic 5-ht and catecholamine neurons may influence the differentiation of their target cells or source neurons , we have produced dissociated cell cultures from embryonic day 14 ( e14 ) rat rhombencephalon ( containing the serotonergic rn ) and mesencephalon ( containing the dopaminergic substantia nigra , sn ) .
C0007412
catecholamine
C0282151
dopaminergic