Table 1.

List of Streptococcus suis strains used in this study

Strain	Relevant phenotype and/or description	Reference
31533	Serotype 2 highly pathogenic European strain isolated from a diseased pig	10
SC84	Serotype 2 epidemic virulent strain isolated from a human outbreak in China	3
89–1591	Serotype 2 intermediate virulent strain isolated from a disease pig in Canada	3
CPS−	Nonencapsulated B218 mutant strain derived from strain 31533	19
ΔSly	Suilysin-negative SX911 mutant strain derived from strain 31533	18
ΔdLTA	D-alanylation of LTA mutant strain derived from strain 31533	20
ΔpgdA	N-deacetylation of peptidoglycan mutant strain derived from strain 31533	21
4961	Reference strain, serotype 3, isolated from a diseased pig	57
DAN13730	Reference strain, serotype 14 isolated from a diseased human	57
S735	Reference strain, serotype 2, isolated from a diseased pig	8