TABLE 4.

Antigen structures important for Ab-specific serum killing of V. anguillarum serogroup O1

Anti-V. anguillarum serogroup O1 Ab	Ab specificity for LPS	V. anguillarum serogroup O1
		Smooth		Rougha agglutination titer
		Agglutination titer	Serum sensitivityb
Roughc	LPS core	22	−	29
Smoothd	LPS core and O antigen	28	+	26
Smooth absorbed with rough	O antigen	27	+	−

^aRough strains were sensitive to NS alone. 

^bSerum sensitivity to NS in the presence of Ab. 

^c840606-2/5. 

^dATCC 43305.