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K-12 F- gal1- gal2- ara- lac- xyl- thr- leu- thi- T1r T5r rpsL(Smr)
"Derived from M.L. Morse's strain 553, which came from the Lederberg strain W2580. A motile isolate was picked from the edge of a swarm on a semisolid tryptone plate."
Parent strain for several non-motile and non-chemotactic mutants isolated by Julius Adler and colleagues.
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- Armstrong, JB et al. (1967) Nonchemotactic mutants of Escherichia coli. J. Bacteriol. 93 390-8 PubMed