Xanthines: ideal immunosuppressants for combination with cyclosporine?

@article{Lin1996XanthinesII,
  title={Xanthines: ideal immunosuppressants for combination with cyclosporine?},
  author={Y-C Lin and Constant Segers and D Mikhalsky and Martin Schoenharting and Mark Waer},
  journal={Transplantation proceedings},
  year={1996},
  volume={28 6},
  pages={3102}
}