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The two bacteria being Escherichia coli and Enterobacter aerogenes do have several significant differences for example; E. aerogenes has a positive test for Voges-Proskauer which means it carries out 2,3-butanediol fermentation were as E. coli does not, E. coli is positive for methyl red test were as E. aerogenes is usually, but not always ... ................
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