@article{labruna_resende_martins_jorge_1999,  title={Cryopreservation of an avian spirochete strain in liquid nitrogen},  volume={51},  ISSN={0102-0935},  url={https://doi.org/10.1590/S0102-09351999000600008},  DOI={10.1590/S0102-09351999000600008},  number={6},  journal={Arquivo Brasileiro de Medicina Veterinária e Zootecnia},  publisher={Universidade Federal de Minas Gerais, Escola de Veterinária},  author={Labruna, M.B. and Resende, J.S. and Martins, N.R.S. and Jorge, M.A.},  year={1999},  month={Dec},  pages={551–553} }