Crossed and uncrossed retinal projections to the hamster circadian system

  title={Crossed and uncrossed retinal projections to the hamster circadian system},
  author={Louise Muscat and Andrew D. Huberman and Cynthia L. Jordan and Lawrence P. Morin},
  journal={Journal of Comparative Neurology},
The hamster suprachiasmatic nucleus (SCN), site of the circadian clock, has been thought to be equally and completely innervated by each retina. This issue was studied in animals that had received an injection of the tracer cholera toxin subunit B (CTb) conjugated to Alexa 488 into the vitreous of one eye, with CTb‐Alexa 594 injected into the other. Retinal projections to the SCN and other nuclei of the circadian system were simultaneously evaluated by using confocal laser microscopy. Each… 
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