Table 1.

Growth parameters of the five lines adapted to PKR-negative MEFs.

Line	Growth rate (h–1)	Maximal yield (PFU/ml × 10–7)	Decay rate (h–1)
T0	0.38 ± 0.02	1.27 ± 0.21	0.02 ± 0.01
L1	0.66 ± 0.00***	1.03 ± 0.08	0.03 ± 0.01
L2	0.64 ± 0.00***	4.48 ± 1.25	0.04 ± 0.02
L3	0.63 ± 0.02***	3.33 ± 0.91*	0.03 ± 0.01
L4	0.57 ± 0.02***	2.61 ± 0.52*	0.04 ± 0.01
L5	0.63 ± 0.03***	5.09 ± 0.93*	0.05 ± 0.02

*P < 0.05; ***P < 0.001 (t-test against T0).