Atlas of serotonergic cell bodies in the cat brainstem: An immunocytochemical analysis

Barry L. Jacobs, Patrick J. Cannon, Efrain C. Azmitia

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The localization and relative number of serotonergic (5HT) cell bodies in the brainstem of the cat were studied through the use of a specific immunocytochemical technique. A surprisingly large number of 5HT cells were found in regions in addition to the classical raphe nuclei (obscurus, pallidus, magnus, centralis superior, and dorsalis). Foremost among these were: the ventral medulla, just dorsal to the pyramidal tract and inferior olivary complex, and especially the area in and around the lateral reticular nucleus; the dorsal pons, surrounding the central reticular core, and in the central gray area; and a region in the mesencephalon, in and around the interpeduncular nucleus. The advantages and disadvantages of the existing schemas for subdividing and labeling groups of brain 5HT neurons are discussed.

Original languageEnglish (US)
Pages (from-to)1-31
Number of pages31
JournalBrain Research Bulletin
Issue number1
StatePublished - Jul 1984

All Science Journal Classification (ASJC) codes

  • General Neuroscience


  • Brainstem
  • Cat
  • Immunocytochemistry
  • Raphe nuclei
  • Serotonin


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