@misc{indiciae02948cfd59e6,
  title = {F. The relation of complement to other systems.},
  author = {E L Becker},
  year = {1969},
  doi = {10.1098/rspb.1969.0065},
  url = {https://pubmed.ncbi.nlm.nih.gov/4389512/},
  note = {Source identifier: 4389512}
}