Chondrogenesis just ain't what it used to be.

@article{Karsenty2001ChondrogenesisJA,
  title={Chondrogenesis just ain't what it used to be.},
  author={Gerard Karsenty},
  journal={The Journal of clinical investigation},
  year={2001},
  volume={107 4},
  pages={405-7}
}