Table 3. Targeted and random integration frequencies: effect of IFN-pretreatment in HT1080.

	–IFN	Experiments	+IFN	Experiments	Fold difference	P
ATF	0.74 ± 0.08	3.1, 3.2	1.05 ± 0.47	3.3, 3.4	+1.41	0.46
RIF	0.70 ± 0.14	3.1, 3.2	0.34 ± 0.17	3.3, 3.4	–2.07	0.15
RTF	0.52 ± 0.02	3.1, 3.2	0.76 ± 0.01	3.3, 3.4	+1.47	0.006

See legend to Table 2.