acumedia* LB Broth, Lennox

• Intended Use: LB Broth, Lennox is used in molecular genetic studies.
• Product Summary and Explanation: LB Broth formula is based on L Broth described by Lennox for growth and maintenance of E. coli strains used in molecular microbiology procedures. LB Broth is nutritionally rich, formulated for the isolation of pure recombinant strains. E. coli is grown to late log phase in LB Broth. Some plasmid vectors may replicate to high copy numbers without selective amplification. Some vectors may require selective amplification to reach high copy numbers. Chloramphenicol can be added to inhibit host synthesis and, as a result, prevent replication of the bacterial chromosome.
LB Broth contains ten times the sodium chloride level of Luria Broth, Miller and one half of that found in LB Broth, Miller. This permits the researcher to select the optimal salt concentration for a specific strain. If desired, the medium may be aseptically supplemented with glucose to prepare the complete medium described by Lennox.
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