Expression of the candidate circadian photopigment melanopsin (Opn4) in the mouse retinal pigment epithelium.

@article{Peirson2004ExpressionOT,
  title={Expression of the candidate circadian photopigment melanopsin (Opn4) in the mouse retinal pigment epithelium.},
  author={Stuart N Peirson and Petra H. M. Bovee-Geurts and Daniela Lupi and Glen Jeffery and Willem J DeGrip and Russell G Foster},
  journal={Brain research. Molecular brain research},
  year={2004},
  volume={123 1-2},
  pages={132-5}
}
A number of responses to light, including circadian entrainment and pupillary constriction, are preserved in mammals that lack rod and cone photoreceptors. Recent studies have demonstrated that a subset of retinal ganglion cells (RGCs) are intrinsically photosensitive, and that these RGCs project to regions of the brain associated with the regulation of the circadian clock and pupil constriction. The photopigment gene(s) that mediate these effects of irradiance remain unidentified, although… CONTINUE READING

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