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Mark O. Martin

This is all a great thing to discuss. I have colleagues who used microprobes to demonstrate that the interior of colonies was essentially anoxic.

Fact is, colonies are strange things:

http://www3.interscience.wiley.com/journal/109913378/abstract?CRETRY=1&SRETRY=0

And:

http://www.ncbi.nlm.nih.gov/pubmed/9891813

And some interesting photos:

http://www.microbelibrary.org/asmonly/details.asp?id=1611&Lang=

I also think that not all microbes are created equal with regard to this phenotype. After all, agar plates and pure cultures and single colonies aren't all that common in nature?

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