Source google image: https://www.researchgate.net/profile/Anselmo_Odeon/publication/12946264/figure/tbl1/AS:667800922247178@1536227555415/BVDV-NY-93-isolation-and-titration.png
Isolation 93
Source google image: https://www.researchgate.net/profile/Anselmo_Odeon/publication/12946264/figure/tbl1/AS:667800922247178@1536227555415/BVDV-NY-93-isolation-and-titration.png