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  • Title: Salmonella typhimurium LT2 strains which are r- m+ for all three chromosomally located systems of DNA restriction and modification.
    Author: Bullas LR, Ryu JI.
    Journal: J Bacteriol; 1983 Oct; 156(1):471-4. PubMed ID: 6352690.
    Abstract:
    We describe the derivation of two strains of Salmonella typhimurium LT2 which are r- m+ for all three of the known chromosomal genes for the restriction and modification of DNA, hsdLT, hsdSA, and hsdSB; the strains were designated LB5000 and LB5010. LB5000 is a smooth derivative sensitive to phage P22; LB5010 is a galE strain sensitive to phage P1.
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