Passenger cells in rat heart allografts. No effect of removal.

@article{Nielsen1975PassengerCI,
  title={Passenger cells in rat heart allografts. No effect of removal.},
  author={Henrik Nielsen and I. D. Heron and Claus Koch},
  journal={Transplantation},
  year={1975},
  volume={19 4},
  pages={360-3}
}