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Vision Res. 1996 Jul;36(13):1883-6.

c-fos gene expression in postnatal rat retinas with light/dark cycle.

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Department of Ophthalmology, Hokkaido University School of Medicine, Sapporo, Japan.


We examined the diurnal variation of c-fos gene expression during a 12:12 light/dark cycle in developing rat retinas by in situ hybridization histochemistry. c-fos Gene was not expressed before postnatal day 10 (P10) but was expressed on P15 in the outer nuclear layer throughout the dark period and in the inner nuclear layer and the ganglion cell layer during the light period. These results demonstrated that the earliest c-fos gene expression occurred between P11 and P15. The good correlation between the expression of c-fos gene and the genes coding for proteins involved in phototransduction, in terms of their diurnal variation and in their development, suggested that c-fos gene may play a role in the regulation of these genes in retinal cells during the light/dark cycle.

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