@misc{indiciaef1aa03006fd9,
  title = {Transfer factor - hypotheses for its structure and function.},
  author = {M Shifrine and R Scibienski},
  year = {1975},
  doi = {10.1159/000225076},
  url = {https://pubmed.ncbi.nlm.nih.gov/778717/},
  note = {Source identifier: 778717}
}