What is the difference between LB Miller and LB Lennox broths?
The LB Miller Broth and LB Lennox Broth contain higher and lower sodium chloride levels respectively. There are minimal differences between the two formulations in most molecular biology studies with commonly used E.coli strains. Different bacteria strains may require different salt concentrations. The low salt formula is more often used in salt-sensitive antibiotic selections. The LB broth used in most labs is LB Miller broth which contains 10 grams NaCl per liter of medium.
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