Table 1. Virus titer^a in supernatant fluids collected at 5 days post-transfection (dpt) and at the time of post-transfection showed a strong CPE for each cDNA construct.

Construct	Titer (pfu/ml) measured at 5 dptb	Sampling time when showed strong CPE	Titer (pfu/ml) measured at the time showed strong CPEc
WT	8.50 × 105	4 dpt	1.35 × 106
Δ307	0	11 dpt	0
ΔAU-rich	0	9 dpt	1.90 × 105
Δ5’-SL	1.55 × 105	6 dpt	9.75 × 105
ΔCYC-like	3.05 × 103	6 dpt	4.50 × 105
ΔSLII	0	10 dpt	5.58 x 105
ΔSLII.1	0	8 dpt	3.65 × 105
ΔSLII.2	0	8 dpt	4.40 × 105
ΔSLII.3	3.25 × 105	6 dpt	5.15 × 105
PK1’	0	10 dpt	2.48 × 104
PK1”	2.35 × 105	6 dpt	4.70 × 105
PK1’1”	3 × 104	6 dpt	5.25 × 105

^aVirus assays on BHK-21 cells using an agarose overlay.

^bCells were passaged at five days post-transfection (dpt) and supernatant fluids were collected at the time of passaging.

^cSampling time for measuring the titer is indicated on the left column.