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. 1971;3(4):691-700.
doi: 10.1016/s0040-8166(71)80014-9.

Synapses in the rat substantia nigra

R L Gulley  1 , M Smithberg
Affiliations

Synapses in the rat substantia nigra

R L Gulley et al. Tissue Cell. 1971.

Abstract

The composition and organization of the input to the rat substantia nigra were studied with the electron microscope. Four distinct types of synaptic boutons were described. The first contained small (381 A), clear synaptic vesicles. The second type contained the small, clear vesicles and several large, dense-core vesicles. The third ending contained large, dense-core vesicles and larger (581 A) clear vesicles. The fourth ending, found on the axon hillock and other terminal boutons, contained slightly elongated, clear synaptic vesicles. The presence of these four boutons was discussed in light of the known afferent input and neurochemical composition of the substantia nigra.

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