Neuronal maturation during late embryonic and early postnatal development of Mouse olfactory bulb

摘要

The olfactory bulb plays an important role as a link between the environment and higher brain centers, This structure is known for its role in neurological, genetic and liver disorders. Hence the aim of studying the neuronal differentiation during late embryonic (E) and early postnatal (P) development of NMRI mice olfactory bulb, using light and electron microscopy, to achieve a better understanding of its functionality. Neuronal cells at day E13 were immature, progressively they differentiate and migrate according to the different cell types, so that a defined laminar organization could be appreciated at birth. In early postnatal stage histotypic organization was consolidated, reaching at day P7 histological and synaptic maturity. The axo-dendritic synapses were observed from the embryonic stage, whereas dendro-dendritic were only seen in the postnatal stage.