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      Distribution of basal-expressed c-fos-like immunoreactive cells of the periaqueductal grey matter of the rat.

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          Abstract

          The distribution of c-fos proto-oncogene expression has been studied in the periaqueductal grey matter (PAG) of non-intentional-stimulated rats by immunohistochemistry. A mean number of 53 +/- 9 Fos-like immunoreactive cells per hemiPAG, distributed into three groups, dorsolateral, lateral and ventrolateral, was found. The dorsolateral and the lateral groups appeared along the entire rostrocaudal PAG, whereas the ventrolateral group appeared only in the caudal half. These results reveal new data on the number and extent of the longitudinal columns within the hypothetical organization of the PAG. They also indicate a continuous activation of a significant population of neurones in the PAG, in agreement with the suggested role of the PAG in the modulation of internal information.

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          Author and article information

          Journal
          Neuroreport
          Neuroreport
          Ovid Technologies (Wolters Kluwer Health)
          0959-4965
          0959-4965
          Nov 04 1996
          : 7
          : 15-17
          Affiliations
          [1 ] Department of Morphological Sciences, University of Valencia, Spain.
          Article
          10.1097/00001756-199611040-00068
          8981460

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