@misc{indiciae06b8545ccce1,
  title = {Developmental biology. How to make the gradient.},
  author = {J M Slack},
  year = {1994},
  doi = {10.1038/371477a0},
  url = {https://pubmed.ncbi.nlm.nih.gov/7935758/},
  note = {Source identifier: 7935758}
}