identify how many plaque-forming units (PFU) in your stock of virus prior to killing it for the vaccine lot production. Using the dilution scheme and results presented below, calculate the number of viral PFU per ml in vaccine straight sample stock tube. Use the same criteria that you used for CFU in terms of number of plaques that are countable and accurate.

1.0 ml 0.1 ml 1.0 ml 0.1 ml 1.0 ml 1.0 ml Amount Removed Amount Removed Amount Removed Amount Removed Amount Removed Amount Removed Amount In Tube Amount In Tube Amount In Tube Amount In Tube Amount In Tube Amount In Tube Straight Sample I 1 Plate 200 microliters(200 pl) (200 pl) 1111111111 1 1 1 1 1 1 1 @6'9 6'9 Q9 0. O I 99.0 ml 2.9 ml 9.0 ml 9.9 ml 9.0 ml 99.0 ml