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The purpose of this study is to investigate the immune-enhancing activity of ophiopogon polysaccharide liposome (OPL). In non-specific immune response experiment, the phagocytosis and cytokines secretion of peritoneal macrophages in vitro and in vivo were performed. In specific immune response experiment, the activity of OPL was measured on chickens which were vaccinated with Newcastle disease (ND)...
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