Objective To study the inhibitory effects of Oyster polysaccharides(OPS) on influenza virus reproduction in Madin-Darby canine kidney(MDCK) cell cultures.MethodsThe MDCK cell culture was used to observe the inhibition of OPS on type A influenza virus by hemagglutination test in terms of hemagglutination titer.The synergistic effect of OPS and ribavirin were studied by associating medication test.ResultsOPS could decrease the hemagglutination titer of influenza virus in MDCK cell culture.OPS and ribavirin dr...