Table 2.

Ability of sRNase L KO-PK and PK-15 cells for PRV propagation.

PRV strain	Harvest time	Virus titers in sRNase L KO-PK cells a	Virus titers in PK-15 cells a	Fold-difference in PRV titers b
SD1404	12 h	1×10 0.6±0.1 TCID50/mL	1×10 0.7±0.2 TCID50/mL	0.79
Bartha-K61	12 h	1×10 0.6±0.2 TCID50/mL	1×10 0.7±0.3 TCID50/mL	0.79
SD1404	24 h	1×10 3.2±0.1 TCID50/mL	1×10 3.0±0.3 TCID50/mL	1.58
Bartha-K61	24 h	1×10 3.1±0.3 TCID50/mL	1×10 2.9±0.1 TCID50/mL	1.58
SD1404	36 h	1×10 5.6±0.2 TCID50/mL∗	1×10 4.9±0.2 TCID50/mL	5.01
Bartha-K61	36 h	1×10 5.1±0.1 TCID50/mL∗	1×10 4.4±0.2 TCID50/mL	5.01
SD1404	48 h	1×10 6.9±0.2 TCID50/mL∗	1×10 6.2±0.1 TCID50/mL	5.01
Bartha-K61	48 h	1×10 6.4±0.2 TCID50/mL∗	1×10 5.6±0.3 TCID50/mL	6.31
SD1404	60 h	1×10 5.9±0.3 TCID50/mL	1×10 5.4±0.1 TCID50/mL	3.16
Bartha-K61	60 h	1×10 5.3±0.1 TCID50/mL	1×10 5.1±0.2 TCID50/mL	1.58

^aData represent the means ± standard deviations of three independent experiments. ∗, P < 0.05.

^bFold-difference in PRV titers was obtained by PRV titers in sRNase L KO-PK cells/PRV titers in PK-15 cells.