@misc{indiciae8ed43479e676,
  title = {Letter: B lymphocytes during ageing.},
  author = {K J Gajl-Peczalska and H Hallgren and J H Kersey and J Zusman and E J Yunis},
  year = {1974},
  doi = {10.1016/s0140-6736(74)91593-1},
  url = {https://pubmed.ncbi.nlm.nih.gov/4135528/},
  note = {Source identifier: 4135528}
}