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. 2002 Feb;127(2):243–254. doi: 10.1046/j.1365-2249.2002.01768.x

Fig. 5.

Fig. 5

Fig. 5

Fig. 5

Fig. 5

Fig. 5

Comparative study of cytokine production by different Streptococcus suis strains. IFN-γ pre-activated THP-1 cells were stimulated by heat-killed (109 cfu/ml) S. suis type 2 strains of human or porcine origin (listed in Table 1). TNF-α (a) at 3 h of incubation, and IL-1 (b), IL-6 (c), IL-8 (d) and MCP-1 (e) at 48 h of incubation, were measured by ELISA titration of stimulated cell supernatant fluids. Points represent the mean production for each individual strain (in pg/ml). Lines represent the average cytokine production of each group of strains. *P < 0·0001 as calculated by the anova test. R indicates the S. suis human strain Reims [28].