@misc{indiciaec5a7edf4c3d8,
  title = {The two signal model for b cell induction.},
  author = {P A Bretscher},
  year = {1975},
  doi = {10.1111/j.1600-065x.1975.tb00147.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/49104/},
  note = {Source identifier: 49104}
}