Evidence for an Expansion-Based Temporal Shh Gradient in Specifying Vertebrate Digit Identities

@article{Harfe2004EvidenceFA,
  title={Evidence for an Expansion-Based Temporal Shh Gradient in Specifying Vertebrate Digit Identities},
  author={Brian D. Harfe and Paul Scherz and Sahar Nissim and Hua Tian and Andrew P. McMahon and Clifford J. Tabin},
  journal={Cell},
  year={2004},
  volume={118},
  pages={517-528}
}

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