@misc{indiciae15fd1e39933d,
  title = {Transfer factor 1975.},
  author = {R M MacKie},
  year = {1976},
  doi = {10.1111/j.1365-2133.1976.tb04352.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/766810/},
  note = {Source identifier: 766810}
}