title: This pineal gland does not mediate phase shifts in the disc shedding rhythm of the rat retina.
abstract: Albino rats were subjected to pinealectomy, superior cervical ganglionectomy, or the appropriate sham preparation and were placed in lighting conditions so that light onset was advanced by 10 hr. After 6 days of this regimen, all animals exhibited a complete shift in their outer segment disc shedding rhythm, indicating that the pineal gland is not a factor in mediating such a shift.
mesh_terms: D000818:Animals; D005728:Ganglia, Sympathetic / Q000502:physiology / Q000601:surgery; D008027:Light; D010507:Periodicity; D010786:Photoreceptor Cells / Q000528:radiation effects*; D010870:Pineal Gland / Q000502:physiology* / Q000601:surgery; D051381:Rats; D012374:Rod Cell Outer Segment / Q000502:physiology / Q000528:radiation effects*