Expression kinetics of PrV UL46 and UL47 proteins. RK13 cells were infected at an MOI of 5 with PrV-Ka, PrV-ΔUL46, PrV-ΔUL47, or PrV-ΔUL46/47 and harvested and analyzed at the indicated hours after infection. Blots were probed with monospecific antisera against the UL46, UL47, UL37, and UL49 proteins or a monoclonal antibody against gB.