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I've stumbled across labels like E. coli MRE 162 or E. coli MRE 600 for different kinds of E. coli bacteria.

What's the meaning of MRE and the numbers like 162 or 600 in this context?

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  • $\begingroup$ Interesting, I think it must be a strain/isolate designation, but I couldn't find any listing that mentions whatever collection "MRE" stands for ... $\endgroup$ – tyersome Dec 10 '19 at 4:48
  • $\begingroup$ Have you checked out my answer? If it answers your question satisfactorily please accept it. If it does not, please indicate what is lacking. $\endgroup$ – David Dec 17 '19 at 17:48
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MRE is an acronym for the Microbiological Research Establishment at Porton Down, UK.

It was applied to Escherichia coli strain MRE600 as that was where the strain was first deposited, according to this paper.

I tracked the answer down in an article by Chris Morris on the Culture Collection Page of Public Health:

“My association with Porton Down, the current location of the European Collection of Animal Cell Cultures (ECACC), started at an earlier date than the inception of ECACC, and was when the site was known as the Microbiological Research Establishment (MRE), part of the Ministry of Defence.”

The numeric portion of the strain designation (600 etc.) that follows MRE is presumably just a reference or accession number within the institute, with no biological meaning.

(As a matter of interest, Porton Down had a certain notoriety in Britain back in the ’60s as a secret military establishment.)

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