ISSN:
1432-0568
Keywords:
Monoamine
;
X-ray microanalysis
;
Ultrastructure
;
Brain stem
;
Chicken
Source:
Springer Online Journal Archives 1860-2000
Topics:
Medicine
Notes:
Summary X-ray microanalysis after aldehyde-chromatedichromate treatment served to confirm the presence of monoaminergic terminals in the nucleus tegmentalis dorsalis (NTD) of the chicken. The monoaminergic terminals were represented as neuronal elements with electron-dense vesicles (EDVs) of several different shapes as seen in Eponembedded semi-thin sections. Conventional electron microscopic observations of the adjacent ultra-thin sections showed the EDVs to be comprised of spherical medium-sized (about 80 nm in diameter), large dense-cored (about 120 nm) and elongated granular vesicles (100–220 nm) in the same nerve varicosities. It is probable that the NTD, being a center of catecholaminergic efferent projections, may also receive direct monoaminergic inputs from an unknown area of the brain and/or from recurrent collaterals of the same catecholamine-containing neurons in the NTD.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00319462
