@misc{indiciaee47e797a782b,
  title = {Two types of functionally distinct, synergizing helper T cells.},
  author = {D M Keller and J E Swierkosz and P Marrack and J W Kappler},
  year = {1980},
  url = {https://pubmed.ncbi.nlm.nih.gov/6153679/},
  note = {Source identifier: 6153679}
}