Need sensitive assay for serum IFN-a

Anton Scott Goustin asg at
Tue Jul 4 16:21:57 EST 1995

There is no assay more sensitive than a bioassay:  for example, endpoint 
dilution of serum samples on MDCK cells for IFN-a/b.  You can measure 
IFN titers in a few µL!

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