SOMATOSTATIN-CONTAINING NEURONS AND NERVE FIBERS IN ThE NUCLEUS TRACTUS SOLITARII——A IMMUNOELECTRON MICROSCOPIC STUDY / 解剖学报

ABSTRACT

Somatostatin-containing neurons and nerve fibers in the commissural subnucleus of the nucleus tractus solitarii(NTS) of the rat were studied by means of munoelectron microscopy. The results showed that somatostatin-like immunoreactive positive neurons are medium or small cells, fusiform or elliptical. Somatostatin- like immunoreactive positive axons are unmyelinated,and mainly form passage or terminal synapses. Somatostatin-positive cell bodies themselves have not been obser- ved to form synapses with somatostatin-positive fibers,but their dendrites may receive innervation from immunoreactive-negative fibers by axo-dendritic synapses.