Mutational and transcriptional analyses of an avian pathogenic Escherichia coli ColV plasmid

BMC Microbiology

Table 1 Embryo Lethality of APEC O2 along with its Mutant Derivatives

Strain	Embryos Inoculated	Deaths	Embryo Lethality %	Z value^A	p-value
NC	41	1	2.4	6.60**	< 0.01^A
APEC O2	41	30	73.2	-	-
APEC 02Δiss	41	29	70.7	0.25	0.81
APEC 02ΔiutA	41	28	68.3	0.49	0.63
APEC 02Δtsh	41	32	78.0	0.51	0.61
APEC 02ΔiroN	41	30	73.2	0.00	1.00
APEC 02ΔcvaB	41	29	70.7	0.25	0.81
APEC 02ΔsitA	41	29	70.7	0.25	0.81
APEC 02Δvir1	41	28	68.3	0.49	0.63
APEC 02Δvir2	41	29	70.7	0.25	0.81

^A As compared to APEC O2.** p < 0.001, no other strains had a significantly different lethality rate than APEC O2

ISSN: 1471-2180