@article{liu_zhai_shi_yang_2013,  title={Purification of metallo-B-lactamase CcrA from Bacteroides fragilis with salting-out method},  volume={56},  ISSN={1516-8913},  url={https://doi.org/10.1590/S1516-89132013000500012},  DOI={10.1590/S1516-89132013000500012},  number={5},  journal={Brazilian Archives of Biology and Technology},  publisher={Instituto de Tecnologia do Paraná - Tecpar},  author={Liu, Cheng-Cheng and Zhai, Le and Shi, Ying and Yang, Ke-Wu},  year={2013},  month={Sep},  pages={811–816} }