@misc{indiciaeca92585d7d4b,
  title = {The immune system--multiple sites but one system.},
  author = {Johannes H Harleman},
  year = {2006},
  doi = {10.1016/j.etp.2006.03.006},
  url = {https://pubmed.ncbi.nlm.nih.gov/16730433/},
  note = {Source identifier: 16730433}
}