CfCPV Contamination with Picornavirus

[Dan_Belkosky at Infopuq.UQUEBEC.CA]

In a stock of CfCPV, with a concentration of 10 to the 10th cfu's/mL, I found 
a picornaviral contamination to the extent of 10 to the 9th cfu's/mL.  
Separating the CPV inclusion bodies from the picornavirus is easy, but I would 
like to isolate the CPV capsids in the supernatant from the picornavirus 
particles.  CfCPV has a diameter of 50-70nm, and picornavirus particles are 
almost always 29-30 nm in diameter.  Please respond if you are aware of a 
purification procedure.

Thanks,
Dan Belkosky