@misc{indiciae1531ec551092,
  title = {Activin signalling has a necessary function in Xenopus early development.},
  author = {S Dyson and J B Gurdon},
  year = {1997},
  doi = {10.1016/s0960-9822(06)00030-3},
  url = {https://pubmed.ncbi.nlm.nih.gov/8999997/},
  note = {Source identifier: 8999997}
}