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. 2003 Oct;71(10):5951–5961. doi: 10.1128/IAI.71.10.5951-5961.2003

TABLE 1.

Intracellular survival of various strains of E. coli in macrophages

E. coli strain	Phenotype	Survival (10⁴ CFU/well) in^a:
		RAW 264.7 cells			THP-M cells
		1 h	4 h	24 h	1 h	4 h	24 h
E44	OmpA⁺ K1⁺ Sfa⁺ IbeA⁺ IbeB⁺	3.1 ± 0.4	8.8 ± 1.5	1.1 ± 0.5	1.2 ± 1.0	2.7 ± 0.5	0.5 ± 0.5
E91	OmpA⁻ K1⁺ Sfa⁺ IbeA⁺ IbeB⁺	0.5 ± 0.5	0.7 ± 0.2	0.1 ± 0.2	0.2 ± 0.1	0.1 ± 0.1	0.1 ± 0.1
E66	OmpA⁺ K1⁻ Sfa⁺ IbeA⁺ IbeB⁺	6.0 ± 0.9	12.4 ± 1.6	1.6 ± 0.5	3.0 ± 0.7	5.1 ± 0.9	0.7 ± 0.2
E44 S⁻	OmpA⁺ K1⁺ Sfa⁻ IbeA⁺ IbeB⁺	3.9 ± 0.6	7.2 ± 0.7	0.7 ± 0.6	1.4 ± 0.4	2.9 ± 0.7	0.9 ± 0.4
10A23	OmpA⁺ K1⁺ Sfa⁺ IbeA⁻IbeB⁺	1.9 ± 0.5	3.2 ± 0.6	0.2 ± 0.3	0.7 ± 0.4	1.1 ± 0.4	0.2 ± 0.2
7A33	OmpA⁺ K1⁺ Sfa⁺ IbeA⁺ IbeB⁻	6.1 ± 1.2	12.1 ± 0.9	1.1 ± 0.8	1.8 ± 0.6	3.4 ± 0.7	0.9 ± 0.4
E105	pOmpA⁺ K1⁺ Sfa⁺ IbeA⁺ IbeB⁺	3.8 ± 0.9	9.1 ± 0.7	1.7 ± 0.7	1.4 ± 0.7	3.7 ± 0.4	0.7 ± 0.8
E111	OmpA⁻ K1⁺ Sfa⁺ IbeA⁺ IbeB⁺	0.4 ± 0.5	0.6 ± 0.4	0.1 ± 0.2	0.3 ± 0.3	0.9 ± 0.2	0.1 ± 0.3

^a

The values are means ± standard deviations.