. 2014 Jun 25;25(2):53–56. doi: 10.1294/jes.25.53

Table 2. Effect of capsule and SeM protein on survival of Streptococcus equi in equine blood and in neutrophils suspended in equine serum.

Strain	Phenotype	Median % Survival (Range)
Strain	Phenotype	Blood (n=18)	Neutrophil Suspension (n=18)
CF32	HA⁺, SeM⁺	14.0 (7.0–20.0)	14.0 (6.0–35.0)
SF463	HA⁺, SeM⁺	14.0 (7.0–20.0)	14.0 (6.0–35.0)

Lex90	HA^–, SeM⁺	6.0 (3.0–9.0)	4.0 (1.0–8.0)
Lex93	HA^–, SeM⁺	P=0.00096^a	P=0.0002^a

Se 1-8	HA⁺, SeM^–	4.0 (1.0–8.0)	2.0 (1.0–7.0)
Se19	HA⁺, SeM^–	P=0.09^b	P=0.019^b

Percentages were calculated from triplicate data from 9 separate experiments for each Se strain. a, P values calculated using Wilcoxon’s signed rank test of significance of difference in survival between HA⁺ SeM⁺ and HA^– SeM⁺ strains. P values for the comparison of HA⁺ SeM⁺ and HA⁺ SeM^– were also 0.00096 (blood) and 0.0002 (neutrophils). b, P values calculated as above for differences in % survival between HA^– SeM⁺ and HA⁺ SeM^– strains. Survival of Se1-8 and Se19 was significantly greater (P=0.019) in blood than in neutrophils.