@misc{indiciaec82da6e6b624,
  title = {Protective immunization against Treponema pallidum using specific immune complexes--an attempt.},
  author = {S Engel and W Diezel and N Sönnichsen},
  year = {1985},
  url = {https://pubmed.ncbi.nlm.nih.gov/2420111/},
  note = {Source identifier: 2420111}
}