Fig. 5From: Quick and improved immune responses to inactivated H9N2 avian influenza vaccine by purified active fraction of Albizia julibrissin saponinsEffect of AJSAF on NK cell activity in the splenocytes from the immunized mice. Splenocytes were prepared 2 weeks after the boosting immunization for detecting NK cell activity by the MTT assay. The values are presented as means ± SD (n = 6). Significant differences with IH9V alone group were designated as †P < 0.01and ‡P < 0.001; those with CH9V group as ¶P < 0.001Back to article page