@misc{indiciae7587f0b3bf8d,
  title = {Observations on human chorionic villi using the electron microscope.},
  author = {J D BOYD and A F HUGHES},
  year = {1954},
  url = {https://pubmed.ncbi.nlm.nih.gov/13192022/},
  note = {Source identifier: 13192022}
}