You are measuring the titer (i.e. plaque-forming units (PFUs) ofthe Rabid Wolverine Virus within the bloodstream of Ohio Statefans, and you measure the following numbers from blood drawn fromone Buckeye (Ohio State) fan. In each case below, you have plated 1mL of the blood or diluted blood on a plate containing a confluentmonolayer of tissue culture cells that are susceptible to thevirus. You allowed the plates to incubate overnight, and uponarriving at the lab early the next morning you count the plaques oneach plate. Your results are the following:
- the plate with the undiluted blood sample resulted in too manyplaques to count
- the plate with the 10-fold dilution of the blood sample resultedin too many plaques to count
- the plate with the 100-fold dilution of the blood sample resultedin approximately 3000 plaques
- the plate with the 1000-fold dilution of the blood sampleresulted in 298 plaques counted
- the plate with the 10,000-fold dilution of the blood sampleresulted in 32 plaques counted
Which of the following best describes the titer of the RabidWolverine Virus within the bloodstream of the single Buckeye (OhioState) fan you tested?
3 x 109 plaques / mL
3 x 107 plaques / mL
3 x 101 plaques / mL
3 x 105 plaques / mL
3 x 103 plaques / mL
