TABLE 5.

Deletion frequencies

Synthetic cassette	Synthetic cassette deletion frequencya
	IntI1	VchIntIA
VCRi-lacIq-VCR2 (p674)	(1 ± 0.4) × 10−2	(1 ± 0.5) × 10−3
VCR1-lacIq-attCaadA7 (p1182)	(1 ± 0.3) × 10−3	(3 ± 1.1) × 10−4
VCR2-lacIq-attCaadB (p3235)	(5 ± 3) × 10−3	(6.5 ± 1) × 10−4
attCaadB-lacIq-attCaadA7 (p3249)	(2.3 ± 0.6) × 10−2	(4.3 ± 4) × 10−3
VCR2-lacIq-attCorfA (p3080)	(6.3 ± 2) × 10−3	(2.1 ± 1) × 10−5
attCorfA-lacIq-VCR2 (p3079)	(1.9 ± 0.5) × 10−3	(2.1 ± 0.1) × 10−5
VCR2-lacIq-attCereA (p3078)	(2.7 ± 1.3) × 10−3	<1.8 × 10−6
VCR2-lacIq-attCdfrA1 (p3113)	(6 ± 1) × 10−6	<7 × 10−7

^aAverage ± standard deviation for three independent trials.