TABLE 1.

Bacterial strains and plasmids

Strain or plasmid	Relevant characteristic(s)	Source or reference
Strains
E. coli XL2 blue		Stratagene
S. suis
10	Virulent serotype 2 strain	32
3	Serotype 2	28
735	Reference serotype 2 strain	28
6555	Reference serotype 1 strain	28
6388	Serotype 1	28
6290	Serotype 1	28
5673	Serotype 1/2	28
5679	Serotype 1/2	28
5209	Reference serotype 1/2 strain	28
5218	Reference serotype 9 strain	28
5973	Serotype 9	28
6437	Serotype 9	28
Reference strains	Serotypes 1 to 34	7, 8, 10
Plasmids
pKUN19	Replication functions of pUC, Ampra	17
pCPS1-1	pKUN19 containing 5-kb EcoRV fragment of cps operon of type 1	This work (Fig. 1B)
pCPS1-2	pKUN19 containing 2.2-kb HindIII fragment of cps operon of type 1	This work (Fig. 1B)
pCPS9-1	pKUN19 containing 1-kb HindIII-XbaI fragment of cps operon of serotype 9	This work (Fig. 1C)
pCPS9-2	pKUN19 containing 4.0-kb XbaI-XbaI fragment of cps operon of serotype 9	This work (Fig. 1C)

^aAmp^r, ampicillin resistant.