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need for definitions

Keith Rose Keith.Rose at bristol.ac.uk
Tue Jul 20 10:06:22 EST 1999

Hi all, 
I've been mulling over this question about "what is a biofilm" ever since the 
memorable debate during the Biofilms symposium at the Sheffield BDSR a few 
years ago. There really is a place for the type of definition that Paul 
mentioned, to make it immediately obvious what "type" of biofilm one is
about, but this wouldn't really make it clear what is and what isn't a
For my part, I suggested that a convenient definition would be any system in 
which the contents of the extracellular fluid are significantly different from 
the fluid at the biofilm surface (Rose and Turner, BBA 1379, 185-190). This 
could also go some way to defining the boundaries of the biofilm. 
Dr R.K. Rose 
Restorative Dentistry 
Bristol Dental Hospital 
Lower Maudlin Street 
Bristol BS1 2LY 
+117 9284334 (fax +117 9284778)

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