Medullary neurons in the core white matter of the olfactory bulb: a new cell type
Por:
Paredes, RG, Larriva-Sahd, J
Publicada:
1 feb 2010
Resumen:
The structure of a new cell type, termed the medullary neuron (MN) because of its intimate association with the rostral migratory stream (RMS) in the bulbar core, is described in the adult rat olfactory bulb. The MN is a triangular or polygonal interneuron whose soma lies between the cellular clusters of the RMS or, less frequently, among the neuron progenitors therein. MNs are easily distinguished from adjacent cells by their large size and differentiated structure. Two MN subtypes have been categorized by the Golgi technique: spiny pyramidal neurons and aspiny neurons. Both MN subtypes bear a large dendritic field impinged upon by axons in the core bulbar white matter. A set of collaterals from the adjacent axons appears to terminate on the MN dendrites. The MN axon passes in close apposition to adjacent neuron progenitors in the RMS. MNs are immunoreactive with antisera raised against gamma-aminobutyric acid and glutamate decarboxylase 65/67. Electron-microscopic observations confir
Filiaciones:
Paredes, RG:
Univ Nacl Autonoma Mexico, Inst Neurobiol, Zona Ctr, Queretaro 76001, Qro, Mexico
Larriva-Sahd, J:
Univ Nacl Autonoma Mexico, Inst Neurobiol, Zona Ctr, Queretaro 76001, Qro, Mexico
|