LB (Luria-Bertani or lysogeny) Broth, Lennox is a general growth medium utilized for the maintenance and propagation of Escherichia coli in molecular microbiology procedures. LB Broth is an industry standard for the preparation of plasmid DNA and recombinant strains of E. coli. LB Lennox is a nutritionally rich medium designed for the growth of pure cultures of recombinant strains. E. coli grows rapidly due because cells are provided with amino acids, nucleotide precursors, vitamins, and metabolites the microorganisms would typically need to produce. LB Broth, Lennox contains 5.0g/L of sodium chloride, compared to 10.0g/L in LB Broth, Miller, and 0.50g/L in Luria-Bertani Broth Base.• LB Broth, Miller should be used by trained professionals within a laboratory setting. • Product is not intended for use in the diagnosis or treatment of disease or other human conditions.