Supporting information for Sierro et al. (2001) Proc. Natl. Acad. Sci. USA 98 (24), 13722–13727. (10.1073/pnas.241308598)

Table 2. Infection and invasion of monolayers of epithelial cells

Strain

Bacterial inoculum

(´ 108 CFU)

*

Gentamicin-protected

bacteria (´ 104 CFU)†

ATCC14028

1.42 ± 0.47

35.60 ± 1.40

SIN14

1.85 ± 0.21

3.05 ± 0.07

SIN18

2.10 ± 0.14

14.50 ± 0.70

SIN20

1.50 ± 0.10

6.77 ± 3.00

SIN22

1.44 ± 0.10

5.60 ± 1.10

SE857

1.48 ± 0.21

41.00 ± 9.90

SEFK32

1.80 ± 0.13

2.75 ± 1.30

L. monocytogenes

1.20 ± 0.28

0.0232 ± 0.0152

E. coli

 EMO

1.50 ± 0.56

0.0038 ± 0.0005

*Number of bacteria added on apical compartment of Caco-2 monolayers.

†Intracellular bacteria protected from gentamicin (50 µg·ml–1 except for L. monocytogenes 5 µg·ml–1) 2.5 h after infection of Caco-2 cells.