Table I.

Remaining CFUs 2 h after administering different L. monocytogenes strains into ileal loops of wt mice (n = 6 mice/group)

L. monocytogenes strainMean ± SD
 CFUs remaining
%
10403s (wt)16.4 ± 21
LLO−/−19 ± 17
ActA−/−14.3 ± 14.1
Internalin A−/−21 ± 14
Internalin B−/−12 ± 3.7
Internalin A−/−/Internalin B−/−17.4 ± 7.6