@misc{indiciae6129be121284,
  title = {CD40 ligation in B cell activation, isotype switching and memory development.},
  author = {D Gray and K Siepmann and G Wohlleben},
  year = {1994},
  doi = {10.1006/smim.1994.1039},
  url = {https://pubmed.ncbi.nlm.nih.gov/7532460/},
  note = {Source identifier: 7532460}
}