On 20 Mar 1995, Isla Browning wrote:
> As suggested by Bioreba we use polyvinylpyrrolidone in extraction and =
>> conjugate buffers when carrying out ELISA for detection of virus in
> plant sap. I would be grateful if someone could enlighten me as to why =
>> it is used . Is its action as a blocker or as an antioxidant or does =
> it have
> some other function?
>>> Isla Browning
>>>PVP may be am absorbent for all kins of noxious compounds (Phenols, etc)
which are abundanr in plant tissue.
Just a wild guess.