in this model , catecholamine varicosities were seen in juxtaposition to vasopressin-deficient perikarya during the initial phases of postnatal development , but these varicosities gradually decreased in number suggesting the possibility that the target neuron peptide , or some functional aspect of the neuron , may be necessary for the normal maintenance of this neuronal interaction .
C0599444
perikarya
C0027882
neuron