Escherichia coli (Migula) Castellani and Chalmers
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Escherichia coli strain Seattle 1946 is a whole-genome sequenced quality control strain that does not produce verotoxin. This organism is a CLSI control strain for antimicrobial susceptibility testing. It is used for media testing, as a negative control for LT toxin production, and as a quality control strain for Abbott, API, Autobac, BBL, bioMerieux VITEK, Biosynth, Difco, IDS, Micro-Media, MicroScan, Roche Diagnostics, and Sensititre products. Used in susceptibility disc testing of neomycin, colistin [colimycin], kanamycin, cephalexin, gentamicins, cefamandole, cephalothin, tetracycline, cephaloglycin, cephaloridine [cephalomycin], nalidixic acid, and chloramphenicol.