Table 1.

The percentage of GFP-expressing cells (above the gate at fluorescence intensity of 2000 in Figures 8 and 9).

Day	DNA onlya	LDH onlyb	0.25 μg/mL DNA in LDH-DNAc	0.50 μg/mL DNA in LDH-DNAc	1.0 μg/mL DNA in LDH-DNAc
1	0.10 ± 0.05d	0.41 ± 0.10	0.40 ± 0.30	0.77 ± 0.39	1.13 ± 0.58
2	0.04 ± 0.02	0.49 ± 0.19	0.84 ± 0.42	3.23 ± 1.66	3.95 ± 1.48
3	0.04 ± 0.01	1.35 ± 0.50	0.97 ± 0.21	2.18 ± 1.41	3.27 ± 1.45

Note: ^aThe plasmid DNA concentration was 1.0 μg/mL in the tests;

^bThe LDH concentration was 100 μg/mL in the tests;

^cThe plasmid DNA concentration was varied at 0.25, 0.50 and 1.0 μg/mL while the LDH concentration was kept at 25 μg/mL in the tests;

^dThe average percentage and standard deviation were calculated from the data in 3 or 4 experiments.