@misc{indiciae5b8079d5f6c6,
  title = {Malignant cell polymorphism studied by phase-contrast microscopy.},
  author = {R J LUDFORD and J SMILES},
  year = {1952},
  doi = {10.1111/j.1365-2818.1952.tb01970.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/13023749/},
  note = {Source identifier: 13023749}
}