Cell strains

... a calibration of the OD is a good idea when working with different strains. However, unless working with very bizarre strains, the OD will give you a good idea of the cell number +/- 1 order of magnitude. It can be enough precision or not depending on ...

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Does anyone know if the numbers of cells at the same OD600s are different between different Escherichia coli strains (when they are grown under the same conditions), or are they same? I would think that the relationship ...

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... origin of replication enables it to replicate in the bacterial cell independently of the bacterial chromosome..." so to me this sounds ... Griffiths discovery with transformation and we are using E. Coli strains uptaking antibiotic resistant plasmids. (I'm sure that many of you ...

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... M, Shinoda I, Samejima Y, et al. Lactoferrin as a suppressor of cell migration of gastrointestinal cell lines. J Cell Physiol 1997;170(2):101-05. ... 2001;73(suppl):393S-98S. 75. Reid G. The scientific basis for probiotic strains of Lactobacillus. Appl Environ Microbiol 1999;65(9):3763-66. 76. ...

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... and such...) So, I'm guessing that the heat denatured the pathogenic strains' bacterial proteins, and probably broke down the cell wall, thus releasing the DNA into the surroundings. The DNA may have fragmented though ...

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