Axo-somatic contacts in the postnatal developing white rat spiral ganglion.
Development of the spiral ganglion in white rats was followed during the first 2 weeks after birth and morphological characteristics of the two neuronal types (I and II) were examined. In some neurons different stages of partial degeneration leading to formation of residual bodies were found without observation of degenerated cell, supporting the idea that differentiation at this time is not associated with cell death. Contacts between cell body of type II neurons and neuronal endings is reported for the first time. Such axo-somatic contacts previously observed only in monkey and man, also exists in lower mammals.
Ivanov
E
E
Department of Anatomy, Histology and Cytology, Pleven Medical University, Bulgaria.
Koitchev
K
K
Cazals
Y
Y
Aran
J M
JM
D000818:Animals; D000831:Animals, Newborn / Q000254:growth & development*; D001369:Axons / Q000648:ultrastructure; D008854:Microscopy, Electron; D009451:Neuroeffector Junction / Q000648:ultrastructure*; D051381:Rats / Q000254:growth & development*; D013136:Spiral Ganglion / Q000166:cytology* / Q000648:ultrastructure; D013569:Synapses / Q000648:ultrastructure