Bronchial lymphoid tissue.

@article{Bienenstock1974BronchialLT,
  title={Bronchial lymphoid tissue.},
  author={John Bienenstock and O Rudzik and Robert L. Clancy and D Y Perey},
  journal={Advances in experimental medicine and biology},
  year={1974},
  volume={45 0},
  pages={47-56}
}