The results showed that no cytopathic effect?CPE?was detected in MDBK cells, and no virus was determined in cell sap, but the virus could induce stable CPE in BHK-21 and PK-15 cells.

• 结果发现,该毒株在MD-BK细胞上不产生细胞病变(CPE),从细胞液中也未检测到病毒,而在BHK-21和PK-15细胞上能够稳定产生CPE。