One-step growth. One-step growth kinetics of PrV-ΔgBβ in normal RK13 (⧫), RK13-005 (▴), RK13-006 (■), RK13-007 (▾), RK13-008 (×), and RK13-gB (●) cells were determined after infection at an MOI of 10. Titers are indicated in PFU per milliliter. Data are averages of three independent experiments. Vertical lines indicate standard deviations.