npy-ir was localized exclusively in axons and axon terminals which could be grouped into three types : ( 1 ) symmetric axo-somatic contacts predominantly with parvocellular neurons , many of which displayed neurosecretory specializations , ( 2 ) predominantly asymmetric contacts onto larger dendritic processes , including some of magnocellular neurosecretory neurons , and ( 3 ) predominantly symmetric contacts with small dendritic and spine-like profiles .
C0004461
axons
C0027882
neurons