TABLE 2.

Comparison of Tf-neo mobilization frequencies

Construct	Mobilization frequency (%)a	Frequency relative to:
		Tf1-1-neob	wtc
Tf2-neo	0.20 ± 0.04	0.06	1.00
Tf2GagFS-neo	≤0.01 ± 0.00	NAd	<0.05
Tf2INFS-neo	0.14 ± 0.03	0.04	0.67
Tf1-neo	3.40 ± 0.91	1.00	1.00
Tf1PRFS-neo	≤0.01 ± 0.00	NA	<0.003
Tf1INFS-neo	0.28 ± 0.10	0.08	0.082

^aThe Tf-neo mobilization frequency was determined for three experiments as described in Materials and Methods. Values are means ± standard errors of the means. 

^bMean mobilization frequency relative to that of Tf1-neo. 

^cMean mobilization frequency relative to that of the corresponding wt element. 

^dNA, not applicable.