Immunocytochemical demonstration of retinal S-antigen in the pineal organ of four mammalian species

Horst W. Korf, Morten Møller, Igal Gery, J. Samuel Zigler, David C. Klein

Research output: Contribution to journalArticlepeer-review

110 Scopus citations


By means of immunocytochemistry retinal S-antigen is selectively demonstrated in retinal photoreceptor cells of the rat and in pinealocytes of the hedgehog, rat, gerbil and cat. Brain areas surrounding the pineal organ are immunonegative. The immunoreactive material is evenly distributed in the perikarya of the cells. Occasionally, inner segments of retinal photoreceptors and processes of pinealocytes are also stained. The outer segments of retinal photoreceptors display a strong immunoreaction. In both pinealocytes and retinal photoreceptors the intensity of the immunoreaction varied considerably among individual cells. The immunocytochemical demonstration of retinal S-antigen in mammalian pinealocytes indicates that these cells still bear characteristics of photoreceptors. This finding is in accord with the concept that mammalian pinealocytes are derived from pineal photoreceptor cells of poikilothermic vertebrates.

Original languageEnglish (US)
Pages (from-to)81-85
Number of pages5
JournalCell and Tissue Research
Issue number1
StatePublished - Jan 1 1985


  • Immunocytochemistry
  • Photoreceptors
  • Pineal organ (mammals)
  • Retina
  • Retinal S-antigen

ASJC Scopus subject areas

  • Pathology and Forensic Medicine
  • Histology
  • Cell Biology


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