TABLE 1.

Loss of the e14::Tn10 element by pressure or UV treatment

Treatment	No. of survivors	Loss of tetracycline resistance in survivors (%)
None	1.8 × 109	0
Pressure
50 MPa	8.9 × 108	0
100 MPa	7.1 × 108	0
150 MPa	1.2 × 108	0
200 MPa	1.7 × 106	0
250 MPa	1.7 × 104	0
UV (0.02 kJ/m2)	1.8 × 107	60