Table 1.

Results of the three independent transposition experiments performed with the recombinant plasmid pTn4401

Expt	Frequency (%) of event/recipient cella
	TcR Cms	TcR Cmr	Total for TcR	Recipient strain J53Azr	Cointegration events	Transposition events	Total
1	9 × 101 (82)	2 × 101 (18)	1.1 × 102	392 × 105	5 × 10−7	2.3 × 10−6	2.8 × 10−6
2	8 × 101 (80)	2 × 101 (20)	1.6 × 102	324 × 105	9.9 × 10−7	3.9 × 10−6	4.9 × 10−6
3	1 × 102 (91)	1 × 101 (9)	1.1 × 102	350 × 105	4.9 × 10−7	4.9 × 10−6	5.4 × 10−6
Avg ± SD					6.6 × 10−7 ± 2.8 × 10−7	3.7 × 10−6 ± 1.3 × 10−6	4.4 × 10−6 ± 1.4 × 10−6

^aTc^R, transconjugant; Tc^R Cm^s, transconjugants in E. coli J53 Az^r Tic^r Gen^r Az^r Cm^s; Tc^R Cm^r, transconjugants in E. coli J53 Az^r Tic^r Gen^r Az^r Cm^r.