Freeze-fracture study of synaptic contacts in the neuropil of the tuberal hypothalamus of the rainbow trout (Salmo gairdneri Rich.).

@article{Caruncho1990FreezefractureSO,
  title={Freeze-fracture study of synaptic contacts in the neuropil of the tuberal hypothalamus of the rainbow trout (Salmo gairdneri Rich.).},
  author={H{\'e}ctor J. Caruncho and Isabel Rodr{\'i}guez-Moldes and Jes{\'u}s Lamas and Ram{\'o}n Anad{\'o}n},
  journal={Journal fur Hirnforschung},
  year={1990},
  volume={31 6},
  pages={689-96}
}
Synaptic contacts in the neuropil of the tuberal hypothalamus of the rainbow trout were examined by the freeze-fracture technique. Three types of synaptic boutons, rounded, flattened and cup-shaped were characterized. In addition, a fourth type of nerve bouton did not exhibit membrane active sites. The round and cup-shaped synaptic boutons had vesicles of 50 nm in size, but flattened boutons contained both small (50 nm) and large sized (100 nm) vesicles. The active sites at the presynaptic… CONTINUE READING