Cytokine production by DCs in response to stimulation by LPS (1 μg/mL) and different S. suis strains (MOI: 0.001) for 16 h. Data are expressed as mean ± SEM (in ng/mL) from independent experiments using DCs derived from 9 different animals. Experiments were repeated at least three times with at least two technical replicates. Control, non-infected cells. WT, wild-type strain. CPS-, non-encapsulated mutant. *p < 0.05, denotes values obtained with the CPS- mutant that are significantly higher than those obtained with the WT strain.