| 標題（洋） | | Studies on the Interaction between Coxsackievirus A9 and HeLa Cells I.Plaque-Forming Ahility of Coxsackievirus A9 in HeLaCell Cultures II.Mode of Growth of Coxsackievirus A9 in Hela Cell Cultures and the Effcetof Sulfatcd Polysaccharide on Plaque Formation |