Plasmid-mediated colistin resistance gene mcr-1 generally confers low-level resistance. The purpose of this study was to investigate the impact of mcr-1 on the development of high-level colistin resistance (HLCR) in Klebsiella pneumoniae and Escherichia coli. In this study. mcr-1-negative K. https://www.markbroyard.com/super-pick-top-bar-hive-starter-kit-fashion-super-choice/