Immunomodulation mediated by microinjection of morphine into the periaqueductal gray matter of the mesencephalon.

@article{Suo1998ImmunomodulationMB,
  title={Immunomodulation mediated by microinjection of morphine into the periaqueductal gray matter of the mesencephalon.},
  author={J L Suo and Richard J. Weber},
  journal={Advances in experimental medicine and biology},
  year={1998},
  volume={437},
  pages={177-82}
}