@misc{indiciae1be218e7c265,
  title = {Second naturally occurring beta-galactosidase in E. coli.},
  author = {D L Hartl and B G Hall},
  year = {1974},
  doi = {10.1038/248152a0},
  url = {https://pubmed.ncbi.nlm.nih.gov/4594529/},
  note = {Source identifier: 4594529}
}