@misc{indiciae175ac0238a0b,
  title = {HGPRT activity changes in preimplantation mouse embryos.},
  author = {P G Kratzer and S M Gartler},
  year = {1978},
  doi = {10.1038/274503a0},
  url = {https://pubmed.ncbi.nlm.nih.gov/580953/},
  note = {Source identifier: 580953}
}