The proportion of lymphocytes capable of recognizing strong transplantation antigens in vivo.

@article{Ford1973ThePO,
  title={The proportion of lymphocytes capable of recognizing strong transplantation antigens in vivo.},
  author={William L. Ford and Robert C. Atkins},
  journal={Advances in experimental medicine and biology},
  year={1973},
  volume={29 0},
  pages={255-62}
}