PMID- 2324317
OWN - NLM
STAT- MEDLINE
DCOM- 19900521
LR  - 20071114
IS  - 0021-9967 (Print)
IS  - 0021-9967 (Linking)
VI  - 292
IP  - 4
DP  - 1990 Feb 22
TI  - Vomeronasal and olfactory nerves of adult and larval bullfrogs: II. Axon 
      terminations and synaptic contacts in the accessory olfactory bulb.
PG  - 624-37
AB  - The ultrastructure of the accessory olfactory bulb (AOB) of the bullfrog tadpole 
      and adult was examined, and the main difference between tadpole and adult is that 
      the latter is more compact and shows more synapses. Except for vomeronasal (VMN) 
      glomeruli, the AOB is not highly organized, with mitral cell neurons scattered 
      throughout the neuropil. VMN axon terminals form asymmetric synapses with mitral 
      cell dendrites in glomeruli; in VMN axon terminals, dense-cored vesicles are seen 
      along with the more abundant lucent vesicles 40-50 nm in diameter. Counts 
      indicated that more than 90% of the dendro-dendritic synapses between mitral 
      cells and presumed granule cells are of the asymmetrical type, and reciprocal 
      asymmetrical-symmetrical synapses are not common. Lucent vesicles with round or 
      slightly ellipsoidal profiles and less abundant dense-cored vesicles 60-90 nm in 
      diameter are found in pre- and postsynaptic dendrites; sometimes the dense-cored 
      vesicles lie against or near the presynaptic membrane. Microtubules were often 
      seen to be closely associated with pre- and postsynaptic elements of 
      dendro-dendritic synapses. The most characteristic feature of mitral cell bodies, 
      apart from their large size, is an extensive Golgi system that may extend well 
      into their major dendritic extensions. Dense-cored vesicles are associated with 
      Golgi membranes, from which they probably originate. Centrioles are associated 
      with the Golgi system, and some become basal bodies and give rise to cilia in 
      some mitral cells.
FAU - Burton, P R
AU  - Burton PR
AD  - Department of Physiology and Cell Biology, University of Kansas, Lawrence 66045.
LA  - eng
GR  - NS 25518/NS/NINDS NIH HHS/United States
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PT  - Research Support, U.S. Gov't, P.H.S.
PL  - United States
TA  - J Comp Neurol
JT  - The Journal of comparative neurology
JID - 0406041
SB  - IM
MH  - Animals
MH  - Microscopy, Electron
MH  - Nasal Septum/growth & development/*ultrastructure
MH  - Nerve Endings/*ultrastructure
MH  - Olfactory Bulb/growth & development/*ultrastructure
MH  - Rana catesbeiana/*anatomy & histology/growth & development
MH  - Synapses/*ultrastructure
EDAT- 1990/02/22 00:00
MHDA- 1990/02/22 00:01
CRDT- 1990/02/22 00:00
PHST- 1990/02/22 00:00 [pubmed]
PHST- 1990/02/22 00:01 [medline]
PHST- 1990/02/22 00:00 [entrez]
AID - 10.1002/cne.902920411 [doi]
PST - ppublish
SO  - J Comp Neurol. 1990 Feb 22;292(4):624-37. doi: 10.1002/cne.902920411.