@misc{indiciaecc011f5c7d6d,
  title = {Crystalline trypsin.},
  author = {M BIER and F F NORD},
  year = {1953},
  doi = {10.1038/1711022a0},
  url = {https://pubmed.ncbi.nlm.nih.gov/13063512/},
  note = {Source identifier: 13063512}
}