@misc{indiciae1b67b8d1be84,
  title = {Molecular changes during prothrombin activation.},
  author = {A M Engel and B Alexander},
  year = {1973},
  doi = {10.1016/0304-4165(73)90149-9},
  url = {https://pubmed.ncbi.nlm.nih.gov/4796208/},
  note = {Source identifier: 4796208}
}