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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 

Parvalbumin immunoreactive neurons in the main olfactory bulb of the house musk shrew, Suncus murinus.

The distribution, morphological features, and postnatal development of parvalbumin ( PV) immunoreactive neurons in the main olfactory bulb (MOB) of the house musk shrew, Suncus murinus, were studied to report for the first time on PV positive bulbar interneurons in the order Insectivora. In adult animals, PV neurons are distributed in the glomerular layer (GL), the external plexiform layer (EPL), the internal plexiform layer (IPL) and the granule cell layer ( GCL) of the MOB. These neurons were identified as a subpopulation of periglomerular cells and perinidal cells [Alonso et al., 1995] in the GL and at the GL-EPL border, respectively, and as bipolar and multipolar neurons in the EPL and four types of the interneurons (horizontal cells, Cajal cells, Golgi cells, and bitufted cells) in the layers deeper than the mitral cell layer. During development of PV neurons, neurons exhibiting extremely faint PV immunoreactivity first appeared in the GCL at postnatal day 14 and increased markedly in number and intensity of their PV immunoreactivity from postnatal days 14 to 28. At postnatal day 21, PV neurons were identified as periglomerular cells in the GL, perinidal cells at the GL-EPL border, and morphologically unidentifiable neurons in the EPL, IPL and GCL. At postnatal day 28, PV neurons exhibited a nearly adult pattern with respect to distribution and structural features. The present results strongly suggest that a wide variety of PV positive neurons in the MOB of the house musk shrew may develop postnatally.[1]

References

  1. Parvalbumin immunoreactive neurons in the main olfactory bulb of the house musk shrew, Suncus murinus. Kakuta, S., Oda, S., Takayanagi, M., Kishi, K. Brain Behav. Evol. (1998) [Pubmed]
 
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