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The aminergic innervation of the pituitary gland in the roach Leuciscus rutilus

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Summary

Fluorescent (aminergic) fibers were demonstrated by the Falck-Hillarp technique in all parts of the neurohypophysis (NH) in the roach (Leuciscus rutilus). The fibers are very thin and few in number in the rostral (RNH) and proximal neurohypophysis (PNH) but slightly more numerous in the NH adjacent to the pars intermedia (PI). The fibers occur in normal fish as well as in specimens pre-treated with α-methyl-noradrenaline. It is proposed that all parts of the adenohypophysis have a very sparse aminergic innervation. There is no correlation between the number of type “B” fibers and fluorescent fibers in the roach NH. The technical difficulties in obtaining good and reliable results in teleost material are discussed.

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References

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Correspondence to Fil. Lic. Bo Ekengren.

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Ekengren, B. The aminergic innervation of the pituitary gland in the roach Leuciscus rutilus . Cell Tissue Res. 158, 169–175 (1975). https://doi.org/10.1007/BF00219959

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Key words

  • Pituitary
  • Teleost
  • Aminergic innervation
  • Falck Hillarp technique