RE; Isotype controls dladouceur at
Fri Mar 22 11:10:54 EST 1996

2.  Isotypic controls:
>>>SO, I was wondering if all 5 isotypic controls needed could  be 
>>>batched together in one tube???

     Thanks for your response to my question...

>If you put two different isotypes labeled with the same fluorochrome 
>in the same tube and got some nonspecific binding, then to which 
>isotype would you attribute the NSB signal?

     But, provided the stained cells are clearly brighter than the 
nsb, does it really matter which isotype you attribute the signal to?
(ie/ In other words, can one not say of the "combined" isotype ctl 
tube:  This would be the MAXIMUM nsb and everything above that is 

Diane Ladouceur
<dladouceur at>

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