@misc{indiciaeb9fddba7e9e6,
  title = {Genetic engineering. Tryptophan under suspicion.},
  author = {D Gershon},
  year = {1990},
  doi = {10.1038/346787a0},
  url = {https://pubmed.ncbi.nlm.nih.gov/2392146/},
  note = {Source identifier: 2392146}
}