Segment-specific decrease of both catecholamine concentration and acetylcholinesterase activity are accompanied by nerve refinement in the rat cauda epididymis during sexual maturation.

@article{Silva2002SegmentspecificDO,
  title={Segment-specific decrease of both catecholamine concentration and acetylcholinesterase activity are accompanied by nerve refinement in the rat cauda epididymis during sexual maturation.},
  author={Adilson M. Silva and Daniel B C Queir{\'o}z and Eduardo F Castro Neto and Maria da Graça Naffah-Mazzacoratti and Rosely Oliveira Godinho and Catarina Segreti Porto and Gabriel Guti{\'e}rrez-Ospina and Maria Christina W. Avellar},
  journal={Journal of andrology},
  year={2002},
  volume={23 3},
  pages={
          374-83
        },
  url={https://api.semanticscholar.org/CorpusID:7939851}
}
Segment-specific variations in noradrenaline concentration and AChE activity during epididymal sexual maturation are documented and suggest that such variations result, at least in part, from the refinement of the autonomic innervation pattern with age.

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