Developing Qualitative Plasmid DNA Reference Materials to Detect Mechanisms of Quinolone and Fluoroquinolone Resistance in Foodborne Pathogens oleh Qinya Niu, Xiumin Su, Luxin Lian, Jinling Huang, Shutong Xue, Wei Zhou, Hongyang Zhao, Xing’an Lu, Shenghui Cui, Jia Chen, Baowei Yang