@article{covas_siufi_silva_orellana_2003,  title={Isolation and culture of umbilical vein mesenchymal stem cells},  volume={36},  ISSN={0100-879X},  url={https://doi.org/10.1590/S0100-879X2003000900006},  DOI={10.1590/S0100-879X2003000900006},  number={9},  journal={Brazilian Journal of Medical and Biological Research},  publisher={Associação Brasileira de Divulgação Científica},  author={Covas, D.T. and Siufi, J.L.C. and Silva, A.R.L. and Orellana, M.D.},  year={2003},  month={Sep},  pages={1179–1183} }