@misc{indiciae4b84db73c6de,
  title = {Delayed hypersensitivity in vitro.},
  author = {B Halpern and U Storb and A Fray},
  year = {1967},
  doi = {10.1038/215400a0},
  url = {https://pubmed.ncbi.nlm.nih.gov/6058294/},
  note = {Source identifier: 6058294}
}