From:Bill Blank

We use colon controls for the same reason. There is always some fecal 
matter on the surface and bacteria are numerous. Colon is very easy 
to get.


At 8:09 AM -0500 11/12/03, Rebecca Barnhart wrote:
>The reason we are using e coli for a helicobacter positive control is
>just to show the stain is working.  If it is positive for e coli it will
>be positive for helicobacter.  Our pathologist does know the difference
>between helicobacter and e coli, he is the one that has decided to get a
>positive control this way.  We do not do IHC stains, just a geimsa

Bill Blank, MD
Heartland Lab, Inc

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