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Table 1 mcr-1-positive and negative control isolates used in assay development and feasibility testing

From: Rapid detection of colistin resistance protein MCR-1 by LC–MS/MS

Name Assay development Feasibility testing
Negative control mcr-1-containing Negative control mcr-1-containing
Achromobacter sp.    4  
Aeromonas sp.    1  
Citrobacter freundii complex    5  
Citrobacter koseri    2  
Chryseobacterium sp.    1  
Enterobacter cloacae complex    9  
E. coli   5* 23 1**
Enterococcus faecalis    1  
Klebisella oxytoca    4  
K. oxytoca/Raoutella ornitholytica    1  
Klebsiella pneumonaie    12 2**
Morganella morganii    1  
Pseudomonas aeruginosa 1   12  
Proteus mirabilis    1  
Pantoea sp. 1   0  
Rhizobium radiobacter    2  
Stenotrophomonas maltophilia    5  
Serratia liquifaciens    1  
Serratia marcescens    2  
Sphingomonas sp.    1  
Staphylococcus epidermidis    1  
Staphylococcus haemolyticus    1  
Total 2 5* 90 3**
  1. *4 of the isolates are from the same patient, **in triplicate for each isolate