@misc{indiciaeee07f4db0c3d,
  title = {Retinoic acid, a developmental signalling molecule.},
  author = {D Summerbell and M Maden},
  year = {1990},
  doi = {10.1016/0166-2236(90)90006-v},
  url = {https://pubmed.ncbi.nlm.nih.gov/1692171/},
  note = {Source identifier: 1692171}
}