@misc{indiciaea4f89ecc852b,
  title = {Electron microscopic studies of macromolecules without appositional contrast.},
  author = {A K Kleinschmidt},
  year = {1971},
  doi = {10.1098/rstb.1971.0045},
  url = {https://pubmed.ncbi.nlm.nih.gov/4399202/},
  note = {Source identifier: 4399202}
}