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Brain Res. 1986 May 28;374(2):357-61.

Spinal neurons which project to the periaqueductal gray and the medullary reticular formation via axon collaterals: a double-label fluorescence study in the rat.


Fluorescent retrograde double-labeling methods were used in which Fast blue and Nuclear yellow or Diamidino yellow dihydrochloride were injected into the midbrain periaqueductal gray (PAG) and medullary reticular formation (MRF). Double-labeled neurons were most frequently observed in the lateral part of lamina V, in laminae VII, VIII and X and in the lateral cervical and lateral spinal nuclei. The data demonstrate that some spinal neurons project to both the PAG and the MRF via axon collaterals.

[Indexed for MEDLINE]

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