@misc{indiciae5049788434ec,
  title = {Immunological memory: a function of antigen persistence.},
  author = {D Gray},
  year = {1993},
  doi = {10.1016/0966-842x(93)90026-n},
  url = {https://pubmed.ncbi.nlm.nih.gov/8044459/},
  note = {Source identifier: 8044459}
}