title: An unusual zone surrounding colistin discs in sensitivity tests of Serratia marcescens.
mesh_terms: D003091:Colistin / Q000494:pharmacology*; D004352:Drug Resistance, Microbial; D008826:Microbial Sensitivity Tests; D012706:Serratia marcescens / Q000187:drug effects* / Q000254:growth & development; D013045:Species Specificity
chemical_list: D003091:Colistin