IL1B and infection: At multiplicity of infection (MOI) 1000:1 of both strains a small induction of the tested genes could be detected compared to the non-infected control, but significant induction for all three genes was found when MOI 10.000:1 was used for infection.At MOI 1000:1 IL-6 and IL-8 expression showed a significantly higher induction (150-fold and 37-fold induction respectively) in the cells challenged with the epsC mutant when compared to the wild-type (6-fold and 2-fold induction respectively), IL-1β did not show a difference compared to the wild-type.